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Create an IPsec VPN tunnel using Packet Tracer - CCNA Security
 
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http://danscourses.com - Learn how to create an IPsec VPN tunnel on Cisco routers using the Cisco IOS CLI. CCNA security topic. 1. Starting configurations for R1, ISP, and R3. Paste to global config mode : hostname R1 interface g0/1 ip address 192.168.1.1 255.255.255.0 no shut interface g0/0 ip address 209.165.100.1 255.255.255.0 no shut exit ip route 0.0.0.0 0.0.0.0 209.165.100.2 hostname ISP interface g0/1 ip address 209.165.200.2 255.255.255.0 no shut interface g0/0 ip address 209.165.100.2 255.255.255.0 no shut exit hostname R3 interface g0/1 ip address 192.168.3.1 255.255.255.0 no shut interface g0/0 ip address 209.165.200.1 255.255.255.0 no shut exit ip route 0.0.0.0 0.0.0.0 209.165.200.2 2. Make sure routers have the security license enabled: license boot module c1900 technology-package securityk9 3. Configure IPsec on the routers at each end of the tunnel (R1 and R3) !R1 crypto isakmp policy 10 encryption aes 256 authentication pre-share group 5 ! crypto isakmp key secretkey address 209.165.200.1 ! crypto ipsec transform-set R1-R3 esp-aes 256 esp-sha-hmac ! crypto map IPSEC-MAP 10 ipsec-isakmp set peer 209.165.200.1 set pfs group5 set security-association lifetime seconds 86400 set transform-set R1-R3 match address 100 ! interface GigabitEthernet0/0 crypto map IPSEC-MAP ! access-list 100 permit ip 192.168.1.0 0.0.0.255 192.168.3.0 0.0.0.255 !R3 crypto isakmp policy 10 encryption aes 256 authentication pre-share group 5 ! crypto isakmp key secretkey address 209.165.100.1 ! crypto ipsec transform-set R3-R1 esp-aes 256 esp-sha-hmac ! crypto map IPSEC-MAP 10 ipsec-isakmp set peer 209.165.100.1 set pfs group5 set security-association lifetime seconds 86400 set transform-set R3-R1 match address 100 ! interface GigabitEthernet0/0 crypto map IPSEC-MAP ! access-list 100 permit ip 192.168.3.0 0.0.0.255 192.168.1.0 0.0.0.255
Views: 52279 danscourses
Site to Site between FTD and VPN headend with Dynamic peer IP
 
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Configuration Site to Site VPN between FTD with VPN headend with Dynamic peer IP. ::::::::::::::::::::::::::::::::::::::::::::::::::::::: access-list VPN_ACL extended permit ip 172.16.11.0 255.255.255.0 172.16.10.0 255.255.255.0 crypto ipsec ikev2 ipsec-proposal Ipsc-proposal-1 protocol esp encryption aes-gcm-256 aes-gcm-192 aes-gcm protocol esp integrity null crypto ipsec security-association pmtu-aging infinite crypto map CSM_Outside_map 1 match address VPN_ACL crypto map CSM_Outside_map 1 set peer 192.168.10.1 crypto map CSM_Outside_map 1 set ikev2 ipsec-proposal Ipsc-proposal-1 crypto map CSM_Outside_map 1 set reverse-route crypto map CSM_Outside_map interface outside crypto ikev2 policy 10 encryption aes-gcm-256 aes-gcm-192 aes-gcm integrity null group 21 20 19 14 5 prf sha512 sha384 sha256 sha lifetime seconds 86400 crypto ikev2 enable outside tunnel-group 192.168.10.1 type ipsec-l2l tunnel-group 192.168.10.1 general-attributes default-group-policy .DefaultS2SGroupPolicy tunnel-group 192.168.10.1 ipsec-attributes ikev2 remote-authentication pre-shared-key cisco123 ikev2 local-authentication pre-shared-key cisco123 Linkedin: https://www.linkedin.com/in/nandakumar80/
GNS3 Labs: Dynamic IPsec VPNs and NAT across BGP Internet routers: Answers Part 3
 
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Can you complete this Dynamic, IPsec, NAT& BGP lab? GNS3 Topology: https://goo.gl/tPAcjd Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more.Can you complete this Dynamic, IPsec, NAT& BGP lab? GNS3 Topology: https://goo.gl/tPAcjd Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more. ! ======================================================== ! Code created by Network Experts Limited ! ! Find us at www.ConfigureTerminal.com ! ! ======================================================== ! CONFIG FOR: c1.davidbombal.com ! ! ======================================================== access-list 100 remark ****** Link to c2.davidbombal.com ****** access-list 100 permit ip 10.1.1.0 0.0.0.255 10.1.2.0 0.0.0.255 ! access-list 101 remark ****** NAT ACL ****** access-list 101 deny ip 10.1.1.0 0.0.0.255 10.1.2.0 0.0.0.255 access-list 101 permit ip 10.1.1.0 0.0.0.255 any ! ip nat inside source route-map nonat interface G0/1 overload ! route-map nonat permit 10 match ip address 101 ! crypto isakmp policy 10 hash md5 authentication pre-share encryption 3des group 2 lifetime 86400 ! crypto isakmp key cisco123 address 0.0.0.0 0.0.0.0 crypto isakmp key cisco123 hostname c2.davidbombal.com ! crypto ipsec transform-set myset esp-3des esp-md5-hmac mode tunnel ! crypto dynamic-map dynmap 120 description ****** Dynamic Map to c2.davidbombal.com ****** set transform-set myset set pfs group2 match address 100 set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! crypto map mymap 130 ipsec-isakmp dynamic dynmap ! crypto map mymap 110 ipsec-isakmp description ****** Static VPN MAP to c2.davidbombal.com ****** set peer c2.davidbombal.com dynamic set transform-set myset set pfs group2 match address 100 set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! interface G0/1 crypto map mymap ip nat outside ! interface G0/0 ip nat inside ! ======================================================== ! Code created by Network Experts Limited ! ! Find us at www.ConfigureTerminal.com ! ! ======================================================== ! CONFIG FOR: c2.davidbombal.com ! ! ======================================================== access-list 100 remark ****** Link to c1.davidbombal.com ****** access-list 100 permit ip 10.1.2.0 0.0.0.255 10.1.1.0 0.0.0.255 ! access-list 101 remark ****** NAT ACL ****** access-list 101 deny ip 10.1.2.0 0.0.0.255 10.1.1.0 0.0.0.255 access-list 101 permit ip 10.1.2.0 0.0.0.255 any ! ip nat inside source route-map nonat interface G0/1 overload ! route-map nonat permit 10 match ip address 101 ! crypto isakmp policy 10 hash md5 authentication pre-share encryption 3des group 2 lifetime 86400 ! crypto isakmp key cisco123 address 0.0.0.0 0.0.0.0 crypto isakmp key cisco123 hostname c1.davidbombal.com ! crypto ipsec transform-set myset esp-3des esp-md5-hmac mode tunnel ! crypto dynamic-map dynmap 120 description ****** Dynamic Map to c2.davidbombal.com ****** set transform-set myset set pfs group2 match address 100 set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! crypto map mymap 130 ipsec-isakmp dynamic dynmap ! crypto map mymap 110 ipsec-isakmp description ****** Static VPN MAP to c2.davidbombal.com ****** set peer c1.davidbombal.com dynamic set transform-set myset set pfs group2 match address 100 set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! interface G0/1 crypto map mymap ip nat outside ! interface G0/0 ip nat inside
Views: 2224 David Bombal
Real World Networking - IOS and ASA Site to Site VPN with NAT
 
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config snippet IOS ip access-list extended NAT deny ip 172.16.100.0 0.0.0.255 10.1.1.0 0.0.0.255 permit ip 172.16.100.0 0.0.0.255 any ! interface GigabitEthernet0/0 ip nat outside ! interface GigabitEthernet0/1 ip nat inside ! ip nat inside source list NAT interface g0/0 overload ! crypto isakmp policy 10 encr aes authentication pre-share group 2 ! crypto isakmp key cisco address 100.64.100.10 ! crypto ipsec transform-set TSET esp-aes esp-sha-hmac mode tunnel ! crypto map CMAP 10 ipsec-isakmp set peer 100.64.100.10 set transform-set TSET match address VPN ! ip access-list extended VPN permit ip 172.16.100.0 0.0.0.255 10.1.1.0 0.0.0.255 ! interface GigabitEthernet0/0 crypto map CMAP ASA nat (inside,outside) source static SRV1 SRV1 destination static PC1 PC1 no-proxy-arp route-lookup object network SRV1 subnet 10.1.1.0 255.255.255.0 nat (inside,outside) dynamic interface ! object network PC1 subnet 172.16.100.0 255.255.255.0 ! crypto ikev1 policy 10 authentication pre-share encryption aes hash sha group 2 lifetime 86400 ! tunnel-group 100.64.101.10 type ipsec-l2l tunnel-group 100.64.101.10 ipsec-attributes ikev1 pre-shared-key cisco ! crypto ipsec ikev1 transform-set TSET esp-aes esp-sha-hmac ! access-list VPN extended permit ip 10.1.1.0 255.255.255.0 172.16.100.0 255.255.255.0 ! crypto map CMAP 10 match address VPN crypto map CMAP 10 set peer 100.64.101.10 crypto map CMAP 10 set ikev1 transform-set TSET ! crypto map CMAP interface outside ! crypto ikev1 enable outside
Views: 368 NexGenT
GNS3 Labs: Dynamic IPsec VPNs and NAT across BGP Internet routers: Answers Part 2
 
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Can you complete this Dynamic, IPsec, NAT& BGP lab? GNS3 Topology: https://goo.gl/tPAcjd Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more.Can you complete this Dynamic, IPsec, NAT& BGP lab? GNS3 Topology: https://goo.gl/tPAcjd Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more. ! ======================================================== ! Code created by Network Experts Limited ! ! Find us at www.ConfigureTerminal.com ! ! ======================================================== ! CONFIG FOR: c1.davidbombal.com ! ! ======================================================== access-list 100 remark ****** Link to c2.davidbombal.com ****** access-list 100 permit ip 10.1.1.0 0.0.0.255 10.1.2.0 0.0.0.255 ! access-list 101 remark ****** NAT ACL ****** access-list 101 deny ip 10.1.1.0 0.0.0.255 10.1.2.0 0.0.0.255 access-list 101 permit ip 10.1.1.0 0.0.0.255 any ! ip nat inside source route-map nonat interface G0/1 overload ! route-map nonat permit 10 match ip address 101 ! crypto isakmp policy 10 hash md5 authentication pre-share encryption 3des group 2 lifetime 86400 ! crypto isakmp key cisco123 address 0.0.0.0 0.0.0.0 crypto isakmp key cisco123 hostname c2.davidbombal.com ! crypto ipsec transform-set myset esp-3des esp-md5-hmac mode tunnel ! crypto dynamic-map dynmap 120 description ****** Dynamic Map to c2.davidbombal.com ****** set transform-set myset set pfs group2 match address 100 set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! crypto map mymap 130 ipsec-isakmp dynamic dynmap ! crypto map mymap 110 ipsec-isakmp description ****** Static VPN MAP to c2.davidbombal.com ****** set peer c2.davidbombal.com dynamic set transform-set myset set pfs group2 match address 100 set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! interface G0/1 crypto map mymap ip nat outside ! interface G0/0 ip nat inside ! ======================================================== ! Code created by Network Experts Limited ! ! Find us at www.ConfigureTerminal.com ! ! ======================================================== ! CONFIG FOR: c2.davidbombal.com ! ! ======================================================== access-list 100 remark ****** Link to c1.davidbombal.com ****** access-list 100 permit ip 10.1.2.0 0.0.0.255 10.1.1.0 0.0.0.255 ! access-list 101 remark ****** NAT ACL ****** access-list 101 deny ip 10.1.2.0 0.0.0.255 10.1.1.0 0.0.0.255 access-list 101 permit ip 10.1.2.0 0.0.0.255 any ! ip nat inside source route-map nonat interface G0/1 overload ! route-map nonat permit 10 match ip address 101 ! crypto isakmp policy 10 hash md5 authentication pre-share encryption 3des group 2 lifetime 86400 ! crypto isakmp key cisco123 address 0.0.0.0 0.0.0.0 crypto isakmp key cisco123 hostname c1.davidbombal.com ! crypto ipsec transform-set myset esp-3des esp-md5-hmac mode tunnel ! crypto dynamic-map dynmap 120 description ****** Dynamic Map to c2.davidbombal.com ****** set transform-set myset set pfs group2 match address 100 set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! crypto map mymap 130 ipsec-isakmp dynamic dynmap ! crypto map mymap 110 ipsec-isakmp description ****** Static VPN MAP to c2.davidbombal.com ****** set peer c1.davidbombal.com dynamic set transform-set myset set pfs group2 match address 100 set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! interface G0/1 crypto map mymap ip nat outside ! interface G0/0 ip nat inside
Views: 851 David Bombal
Configuring Site to Site IPSec VPN Tunnel on Cisco Router
 
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crypto isakmp policy 2 encr aes hash md5 authentication pre-share group 2 lifetime 600 crypto isakmp key kamran address 99.99.150.2 ! ! crypto ipsec transform-set MY-VPN esp-aes 256 esp-sha-hmac ! crypto map MAP 1 ipsec-isakmp set peer 99.99.150.2 set transform-set MY-VPN match address VPN_ACL ! interface FastEthernet0/0 ip address 188.72.150.2 255.255.255.252 duplex auto speed auto crypto map MAP ! interface FastEthernet0/1 ip address 192.168.1.1 255.255.255.0 duplex auto speed auto ! ip forward-protocol nd ip route 0.0.0.0 0.0.0.0 188.72.150.1 no ip http server no ip http secure-server ! ! ! ip access-list extended VPN_ACL permit ip 192.168.1.0 0.0.0.255 172.16.50.0 0.0.0.255
Views: 18453 Kamran Shalbuzov
GNS3 Labs: IPSec VPN with NAT across BGP Internet routers: Can you complete the lab?
 
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Can you complete this IPSec VPN & NAT lab? GNS3 Topology: https://goo.gl/p7p8pq Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more. IPsec Overview: A secure network starts with a strong security policy that defines the freedom of access to information and dictates the deployment of security in the network. Cisco Systems offers many technology solutions for building a custom security solution for Internet, extranet, intranet, and remote access networks. These scalable solutions seamlessly interoperate to deploy enterprise-wide network security. Cisco System's IPsec delivers a key technology component for providing a total security solution. Cisco's IPsec offering provides privacy, integrity, and authenticity for transmitting sensitive information over the Internet. IPsec provides secure tunnels between two peers, such as two routers. You define which packets are considered sensitive and should be sent through these secure tunnels, and you define the parameters which should be used to protect these sensitive packets, by specifying characteristics of these tunnels. Then, when the IPsec peer sees such a sensitive packet, it sets up the appropriate secure tunnel and sends the packet through the tunnel to the remote peer. More accurately, these tunnels are sets of security associations (SAs) that are established between two IPsec peers. The security associations define which protocols and algorithms should be applied to sensitive packets, and also specify the keying material to be used by the two peers. Security associations are unidirectional and are established per security protocol (AH or ESP). With IPsec you define what traffic should be protected between two IPsec peers by configuring access lists and applying these access lists to interfaces by way of crypto map sets. Therefore, traffic can be selected based on source and destination address, and optionally Layer 4 protocol, and port. The access lists used for IPsec only determine which traffic should be protected by IPsec, not which traffic should be blocked or permitted through the interface. Separate access lists define blocking and permitting at the interface. A crypto map set can contain multiple entries, each with a different access list. The crypto map entries are searched in order—the router attempts to match the packet to the access list specified in that entry. It is good practice to place the most important crypto map entries at the top of the list. When a packet matches a permit entry in a particular access list, and the corresponding crypto map entry is tagged as cisco, then CET is triggered, and connections are established if necessary. If the crypto map entry is tagged as ipsec-isakmp, IPsec is triggered. If no security association exists that IPsec can use to protect this traffic to the peer, IPsec uses the Internet Key Exchange protocol (IKE) to negotiate with the remote peer to set up the necessary IPsec security associations on behalf of the data flow. The negotiation uses information specified in the crypto map entry as well as the data flow information from the specific access list entry. If the crypto map entry is tagged as ipsec-manual, IPsec is triggered. If no security association exists that IPsec can use to protect this traffic to the peer, the traffic is dropped. In this case, the security associations are installed via the configuration, without the intervention of IKE. If the security associations did not exist, IPsec did not have all of the necessary pieces configured. Once established, the set of security associations (outbound, to the peer) is then applied to the triggering packet as well as to subsequent applicable packets as those packets exit the router. Applicable packets are packets that match the same access list criteria that the original packet matched. For example, all applicable packets could be encrypted before being forwarded to the remote peer. The corresponding inbound security associations are used when processing the incoming traffic from that peer. If IKE is used to establish the security associations, the security associations will have lifetimes set so that they periodically expire and require renegotiation, thus providing an additional level of security. Multiple IPsec tunnels can exist between two peers to secure different data streams, with each tunnel using a separate set of security associations. For example, some data streams might be just authenticated while other data streams must both be encrypted and authenticated. Go here for more: https://www.cisco.com/c/en/us/td/docs/net_mgmt/vpn_solutions_center/2-0/ip_security/provisioning/guide/IPsecPG1.html
Views: 3486 David Bombal
Improving GRE stability | VPN Tunnels Part 3
 
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Improving GRE stability | VPN Tunnels Part 3 Once you’ve built your GRE tunnel, you need to make sure it is stable. One of the potential issues that you may face is called Recursive Routing. This can cause your tunnel to flap repeatedly. Recursive Routing occurs when underlay routes are incorrectly advertised into the overlay. This can be worse when little attention is paid to LPM (Longest Prefix Match), the route metric, and the administrative distance. Another concern is the stateless nature of the tunnel. This can result in traffic being blackholed. We can use keepalives (heartbeats), as well as tuning the source and destination interfaces, in order to resolve this issue. There is a catch though. Keepalives do not work with route-based IPSec encryption. Neither does BFD for that matter! Some valid work arounds include using crypto-maps (policy-based encryption), using routing protocols, or using IP SLA with an EEM script. Part 1: How GRE Works - See the encapsulation process, as a packet moves from one side of the network to another Part 2: GRE Encryption with IPSec - GRE is not encrypted by default! See the basics of IPSec, and how we can use it with GRE tunnels Part 3: Improving GRE Stability - There are a few pitfalls to watch out for, including recursive routing. See some of the best practices that you can apply to make your tunnel stable For more information, have a look at https://networkdirection.net/Advanced+GRE Anatomy of GRE Tunnels (by ‘Sarah’): https://learningnetwork.cisco.com/blogs/vip-perspectives/2017/03/14/anatomy-of-gre-tunnels How to Detect IPSec GRE Tunnel Status: https://learningnetwork.cisco.com/message/590257#590257 This video is useful for Cisco #CCNA and #CCNP certifications 🌏 https://www.youtube.com/c/networkdirection 🌏 https://twitter.com/NetwrkDirection 🌏 https://www.patreon.com/NetworkDirection 🌏 https://www.facebook.com/networkdirection 🌏 https://www.networkdirection.net 🌏 https://www.patreon.com/NetworkDirection
Views: 1317 Network Direction
GNS3 Labs: IPsec VPN with NAT across BGP Internet routers: Answers Part 1
 
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GNS3 Topology: https://goo.gl/p7p8pq Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more. VPN Configuration: ====================================================== ! CONFIG FOR: C1 ! ! ====================================================== access-list 100 remark ****** Link to C2 ****** access-list 100 permit ip 10.1.1.0 0.0.0.255 10.1.2.0 0.0.0.255 ! access-list 101 remark ****** NAT ACL ****** access-list 101 deny ip 10.1.1.0 0.0.0.255 10.1.2.0 0.0.0.255 access-list 101 permit ip 10.1.1.0 0.0.0.255 any ! ip nat inside source route-map nonat interface G0/1 overload ! route-map nonat permit 10 match ip address 101 ! crypto isakmp policy 10 hash md5 authentication pre-share encryption 3des group 2 lifetime 86400 ! crypto isakmp key cisco123 address 8.8.11.2 ! crypto ipsec transform-set myset esp-3des esp-md5-hmac mode tunnel ! crypto map mymap 1 ipsec-isakmp description ****** Link to C2 ****** set peer 8.8.11.2 set transform-set myset set pfs group2 match address 100 set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! interface G0/1 crypto map mymap ip nat outside ! interface G0/0 ip nat inside !===================================================== ! CONFIG FOR: C2 ! ! ====================================================== access-list 100 remark ****** Link to C1 ****** access-list 100 permit ip 10.1.2.0 0.0.0.255 10.1.1.0 0.0.0.255 ! access-list 101 remark ****** NAT ACL ****** access-list 101 deny ip 10.1.2.0 0.0.0.255 10.1.1.0 0.0.0.255 access-list 101 permit ip 10.1.2.0 0.0.0.255 any ! ip nat inside source route-map nonat interface G0/1 overload ! route-map nonat permit 10 match ip address 101 ! crypto isakmp policy 10 hash md5 authentication pre-share encryption 3des group 2 lifetime 86400 ! crypto isakmp key cisco123 address 8.8.10.2 ! crypto ipsec transform-set myset esp-3des esp-md5-hmac mode tunnel ! crypto map mymap 2 ipsec-isakmp description ****** Link to C1 ****** set peer 8.8.10.2 set transform-set myset set pfs group2 match address 100 set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! interface G0/1 crypto map mymap ip nat outside ! interface G0/0 ip nat inside !========================================= Go here for more: https://www.cisco.com/c/en/us/td/docs/net_mgmt/vpn_solutions_center/2-0/ip_security/provisioning/guide/IPsecPG1.html
Views: 2888 David Bombal
GNS3 Labs: DMVPN, IPsec and NAT across BGP Internet routers: Can you complete the lab?
 
06:52
Can you complete this DMVPN, IPsec, NAT& BGP lab? GNS3 Topology: https://goo.gl/udfNPL Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more. IPsec Overview: A secure network starts with a strong security policy that defines the freedom of access to information and dictates the deployment of security in the network. Cisco Systems offers many technology solutions for building a custom security solution for Internet, extranet, intranet, and remote access networks. These scalable solutions seamlessly interoperate to deploy enterprise-wide network security. Cisco System's IPsec delivers a key technology component for providing a total security solution. Cisco's IPsec offering provides privacy, integrity, and authenticity for transmitting sensitive information over the Internet. IPsec provides secure tunnels between two peers, such as two routers. You define which packets are considered sensitive and should be sent through these secure tunnels, and you define the parameters which should be used to protect these sensitive packets, by specifying characteristics of these tunnels. Then, when the IPsec peer sees such a sensitive packet, it sets up the appropriate secure tunnel and sends the packet through the tunnel to the remote peer. More accurately, these tunnels are sets of security associations (SAs) that are established between two IPsec peers. The security associations define which protocols and algorithms should be applied to sensitive packets, and also specify the keying material to be used by the two peers. Security associations are unidirectional and are established per security protocol (AH or ESP). With IPsec you define what traffic should be protected between two IPsec peers by configuring access lists and applying these access lists to interfaces by way of crypto map sets. Therefore, traffic can be selected based on source and destination address, and optionally Layer 4 protocol, and port. The access lists used for IPsec only determine which traffic should be protected by IPsec, not which traffic should be blocked or permitted through the interface. Separate access lists define blocking and permitting at the interface. A crypto map set can contain multiple entries, each with a different access list. The crypto map entries are searched in order—the router attempts to match the packet to the access list specified in that entry. It is good practice to place the most important crypto map entries at the top of the list. When a packet matches a permit entry in a particular access list, and the corresponding crypto map entry is tagged as cisco, then CET is triggered, and connections are established if necessary. If the crypto map entry is tagged as ipsec-isakmp, IPsec is triggered. If no security association exists that IPsec can use to protect this traffic to the peer, IPsec uses the Internet Key Exchange protocol (IKE) to negotiate with the remote peer to set up the necessary IPsec security associations on behalf of the data flow. The negotiation uses information specified in the crypto map entry as well as the data flow information from the specific access list entry. If the crypto map entry is tagged as ipsec-manual, IPsec is triggered. If no security association exists that IPsec can use to protect this traffic to the peer, the traffic is dropped. In this case, the security associations are installed via the configuration, without the intervention of IKE. If the security associations did not exist, IPsec did not have all of the necessary pieces configured. Once established, the set of security associations (outbound, to the peer) is then applied to the triggering packet as well as to subsequent applicable packets as those packets exit the router. Applicable packets are packets that match the same access list criteria that the original packet matched. For example, all applicable packets could be encrypted before being forwarded to the remote peer. The corresponding inbound security associations are used when processing the incoming traffic from that peer. If IKE is used to establish the security associations, the security associations will have lifetimes set so that they periodically expire and require renegotiation, thus providing an additional level of security. Multiple IPsec tunnels can exist between two peers to secure different data streams, with each tunnel using a separate set of security associations. For example, some data streams might be just authenticated while other data streams must both be encrypted and authenticated. Go here for more: https://www.cisco.com/c/en/us/td/docs/net_mgmt/vpn_solutions_center/2-0/ip_security/provisioning/guide/IPsecPG1.html
Views: 2400 David Bombal
FTD Site to Site VPN with ASA
 
09:58
Creating Site to Site IPSec VPN between FTD and ASA, FTD being managed by FMC. :::::::::::::::::::::::::::::::: access-list VPN_ACL extended permit ip 172.16.11.0 255.255.255.0 172.16.10.0 255.255.255.0 crypto ipsec ikev2 ipsec-proposal Ipsc-proposal-1 protocol esp encryption aes-gcm-256 aes-gcm-192 aes-gcm protocol esp integrity null crypto ipsec security-association pmtu-aging infinite crypto map CSM_Outside_map 1 match address VPN_ACL crypto map CSM_Outside_map 1 set peer 192.168.10.1 crypto map CSM_Outside_map 1 set ikev2 ipsec-proposal Ipsc-proposal-1 crypto map CSM_Outside_map 1 set reverse-route crypto map CSM_Outside_map interface outside crypto ikev2 policy 10 encryption aes-gcm-256 aes-gcm-192 aes-gcm integrity null group 21 20 19 14 5 prf sha512 sha384 sha256 sha lifetime seconds 86400 crypto ikev2 enable outside tunnel-group 192.168.10.1 type ipsec-l2l tunnel-group 192.168.10.1 general-attributes default-group-policy .DefaultS2SGroupPolicy tunnel-group 192.168.10.1 ipsec-attributes ikev2 remote-authentication pre-shared-key cisco123 ikev2 local-authentication pre-shared-key cisco123 Linkedin: https://www.linkedin.com/in/nandakumar80/
Site to Site Ikev2 asymmetric  Pre Shared key explainnation with wireshark
 
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Hi Friends, Please checkout my new video on Site to Site ikev2 VPN between routers with asymmetric Pre Share key . If you like this video give it a thumps up and subscribe my channel for more video. Have any question put it on comment section. Site to Site VPN with Certificate - Wireshark Capture https://youtu.be/BthdhJQzq9c Public Key Infrastructure - Explained https://youtu.be/kZETEaAJgYY Site to Site VPN on Router- Understanding and Explanation https://www.youtube.com/watch?v=_A6tm22lYsk Site to Site VPN Main mode negotiation with Wireshark Explanation https://www.youtube.com/watch?v=aaINqti3Hgc What is NAT-T ? What is use in Site to Site VPN with NAT -T wireshark capture and LAB explanation https://youtu.be/9yZSgJHdzCI Site Site Troubleshooting With Debug Messages https://youtu.be/EJ1dHw-KXXM Cisco ASA Site-to-Site VPN Configuration with certificate - Debug https://youtu.be/r9ooYhklbew Steps to configure Site to Site Ikev2 crypto ikev2 proposal VPN_PRO encryption 3des integrity sha256 group 2 crypto ikev2 policy 10 proposal VPN_PRO crypto ikev2 keyring KEY peer peer1 address 200.1.1.10 pre-shared-key local cisco pre-shared-key remote cisco1 crypto ikev2 profile PROFILE match identity remote address 200.1.1.10 255.255.255.0 authentication remote pre-share authentication local pre-share keyring local KEY crypto ipsec transform-set TSET esp-3des esp-md5-hmac mode tunnel crypto map CMAP 10 ipsec-isakmp set peer 19.19.4.10 set transform-set TRANS set ikev2-profile ccie match address IV2 int g0/0 crypto map CMAP E-mail ID : [email protected] #VPN #Ikev2 #bikashtech -~-~~-~~~-~~-~- Please watch: "Palo Alto Firewall Basic Configuration | Zone | Security Policy | NAT | Virtual Router" https://www.youtube.com/watch?v=qXtP-POXIQE -~-~~-~~~-~~-~-
Views: 157 Bikash's Tech
Configuring site to site vpn with FTD using FDM
 
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Configuring Site to site VPN on FTD using FDM Firepower Device Manager. ::::::::::::::::::::::::::::::::::::::::::::::::: access-list VPN_ACL extended permit ip 172.16.11.0 255.255.255.0 172.16.10.0 255.255.255.0 crypto ipsec ikev2 ipsec-proposal Ipsc-proposal-1 protocol esp encryption aes-gcm-256 aes-gcm-192 aes-gcm protocol esp integrity null crypto ipsec security-association pmtu-aging infinite crypto map CSM_Outside_map 1 match address VPN_ACL crypto map CSM_Outside_map 1 set peer 192.168.10.15 crypto map CSM_Outside_map 1 set ikev2 ipsec-proposal Ipsc-proposal-1 crypto map CSM_Outside_map 1 set reverse-route crypto map CSM_Outside_map interface outside crypto ikev2 policy 10 encryption aes-gcm-256 aes-gcm-192 aes-gcm integrity null group 21 20 19 14 5 prf sha512 sha384 sha256 sha lifetime seconds 86400 crypto ikev2 enable outside tunnel-group 192.168.10.15 type ipsec-l2l tunnel-group 192.168.10.15 general-attributes default-group-policy .DefaultS2SGroupPolicy tunnel-group 192.168.10.15 ipsec-attributes ikev2 remote-authentication pre-shared-key cisco123 ikev2 local-authentication pre-shared-key cisco123 Linkedin: https://www.linkedin.com/in/nandakumar80/
GNS3 Labs: IPsec VPN with NAT across BGP Internet routers: Wireshark captures. Answers Part 2
 
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GNS3 Topology: https://goo.gl/p7p8pq Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more. VPN Configuration: ====================================================== ! CONFIG FOR: C1 ! ! ====================================================== access-list 100 remark ****** Link to C2 ****** access-list 100 permit ip 10.1.1.0 0.0.0.255 10.1.2.0 0.0.0.255 ! access-list 101 remark ****** NAT ACL ****** access-list 101 deny ip 10.1.1.0 0.0.0.255 10.1.2.0 0.0.0.255 access-list 101 permit ip 10.1.1.0 0.0.0.255 any ! ip nat inside source route-map nonat interface G0/1 overload ! route-map nonat permit 10 match ip address 101 ! crypto isakmp policy 10 hash md5 authentication pre-share encryption 3des group 2 lifetime 86400 ! crypto isakmp key cisco123 address 8.8.11.2 ! crypto ipsec transform-set myset esp-3des esp-md5-hmac mode tunnel ! crypto map mymap 1 ipsec-isakmp description ****** Link to C2 ****** set peer 8.8.11.2 set transform-set myset set pfs group2 match address 100 set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! interface G0/1 crypto map mymap ip nat outside ! interface G0/0 ip nat inside !===================================================== ! CONFIG FOR: C2 ! ! ====================================================== access-list 100 remark ****** Link to C1 ****** access-list 100 permit ip 10.1.2.0 0.0.0.255 10.1.1.0 0.0.0.255 ! access-list 101 remark ****** NAT ACL ****** access-list 101 deny ip 10.1.2.0 0.0.0.255 10.1.1.0 0.0.0.255 access-list 101 permit ip 10.1.2.0 0.0.0.255 any ! ip nat inside source route-map nonat interface G0/1 overload ! route-map nonat permit 10 match ip address 101 ! crypto isakmp policy 10 hash md5 authentication pre-share encryption 3des group 2 lifetime 86400 ! crypto isakmp key cisco123 address 8.8.10.2 ! crypto ipsec transform-set myset esp-3des esp-md5-hmac mode tunnel ! crypto map mymap 2 ipsec-isakmp description ****** Link to C1 ****** set peer 8.8.10.2 set transform-set myset set pfs group2 match address 100 set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! interface G0/1 crypto map mymap ip nat outside ! interface G0/0 ip nat inside !========================================= Go here for more: https://www.cisco.com/c/en/us/td/docs/net_mgmt/vpn_solutions_center/2-0/ip_security/provisioning/guide/IPsecPG1.html
Views: 2102 David Bombal
Cisco ASA IPSec with NAT Overlap in URDU by Khurram Nawaz
 
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== Configuration Pasted Below == In this Video, I will show you his the steps used to translate the VPN traffic that travels over a LAN-to-LAN (L2L) IPsec tunnel between two Cisco ASA Firewall in overlapping scenarios. If you found this video helpful and would like to see more like & subscribe. If you have any questions pease drop a comment, thanks! ==== ASA-SITE-A ==== object network INSIDE_10.0.0.0 subnet 10.0.0.0 255.255.255.0 object network INSIDE_MAP_192.168.10.0 subnet 192.168.10.0 255.255.255.0 object network REMOTE_LAN_192.168.20.0 subnet 192.168.20.0 255.255.255.0 nat (inside,Outside) source static INSIDE_10.0.0.0 INSIDE_MAP_192.168.10.0 destination static REMOTE_LAN_192.168.20.0 REMOTE_LAN_192.168.20.0 access-list IPSEC-ACL extended permit ip object INSIDE_MAP_192.168.10.0 object REMOTE_LAN_192.168.20.0 access-list IPSEC-ACL extended permit icmp object INSIDE_MAP_192.168.10.0 object REMOTE_LAN_192.168.20.0 crypto ikev1 policy 10 authentication pre-share encryption aes hash sha group 2 lifetime 3600 crypto ikev1 enable Outside tunnel-group 3.3.3.2 type ipsec-l2l tunnel-group 3.3.3.2 ipsec-attributes ikev1 pre-shared-key cisco123 crypto ipsec ikev1 transform-set ESP-AES-SHA esp-aes esp-sha-hmac crypto map IPSEC_VPN_MAP 1 match address IPSEC-ACL crypto map IPSEC_VPN_MAP 1 set pfs crypto map IPSEC_VPN_MAP 1 set peer 3.3.3.2 crypto map IPSEC_VPN_MAP 1 set ikev1 transform-set ESP-AES-SHA crypto map IPSEC_VPN_MAP interface Outside policy-map global_policy class inspection_default inspect icmp ping 192.168.20.10 INSIDE ROUTER ON SITE B TO VERIFY ===== ASA-SITE-B ==== ASA-SITE-B object network INSIDE_10.0.0.0 subnet 10.0.0.0 255.255.255.0 object network INSIDE_MAP_192.168.20.0 subnet 192.168.20.0 255.255.255.0 object network REMOTE_LAN_192.168.10.0 subnet 192.168.10.0 255.255.255.0 nat (inside,Outside) source static INSIDE_10.0.0.0 INSIDE_MAP_192.168.20.0 destination static REMOTE_LAN_192.168.10.0 REMOTE_LAN_192.168.10.0 access-list IPSEC-ACL extended permit ip object INSIDE_MAP_192.168.20.0 object REMOTE_LAN_192.168.10.0 access-list IPSEC-ACL extended permit icmp object INSIDE_MAP_192.168.20.0 object REMOTE_LAN_192.168.10.0 crypto ikev1 policy 10 authentication pre-share encryption aes hash sha group 2 lifetime 3600 crypto ikev1 enable Outside tunnel-group 2.2.2.2 type ipsec-l2l tunnel-group 2.2.2.2 ipsec-attributes ikev1 pre-shared-key cisco123 crypto ipsec ikev1 transform-set ESP-AES-SHA esp-aes esp-sha-hmac crypto map IPSEC_VPN_MAP 1 match address IPSEC-ACL crypto map IPSEC_VPN_MAP 1 set pfs crypto map IPSEC_VPN_MAP 1 set peer 2.2.2.2 crypto map IPSEC_VPN_MAP 1 set ikev1 transform-set ESP-AES-SHA crypto map IPSEC_VPN_MAP interface Outside policy-map global_policy class inspection_default inspect icmp ping 192.168.10.10 INSIDE ROUTER ON SITE B TO VERIFY
DrayTek to Cisco Router IPSEC VPN
 
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This video file include from DrayTek to Cisco Router IPSEC VPN Tunnel configiration / Bu video dosyası DrayTek den Cisco Router cihazına nasıl IPSEC VPN kurulumunu içermektedir. #-------------------Internet Router version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname INTERNET ! boot-start-marker boot-end-marker ! enable secret 5 $1$N5dU$xoGtoJCSMfgTfVYVfjCAc/ ! no aaa new-model ! resource policy ! memory-size iomem 5 ! ! ip cef no ip domain lookup ip domain name lab.local ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ip address 200.200.200.1 255.255.255.0 no shut duplex auto speed auto ! interface FastEthernet0/1 ip address 200.200.201.1 255.255.255.0 no shut duplex auto speed auto ! no ip http server no ip http secure-server ! ! ! ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 logging synchronous line aux 0 exec-timeout 0 0 privilege level 15 logging synchronous line vty 0 4 login ! ! end #----------------------------- VPN GW ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname VPNRouter ! boot-start-marker boot-end-marker ! enable secret 5 $1$.Cuf$Ri9YUNmHcdDDt9c2ewCEu/ ! no aaa new-model ! resource policy ! memory-size iomem 5 ! ! ip cef no ip domain lookup ip domain name lab.local ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! crypto isakmp policy 10 encr aes 256 authentication pre-share lifetime 28800 crypto isakmp key 987654321 address 200.200.201.2 ! ! crypto ipsec transform-set 50 esp-aes 256 esp-sha-hmac ! crypto map CMAP 10 ipsec-isakmp set peer 200.200.201.2 set security-association lifetime seconds 900 set transform-set 50 set pfs group1 match address 101 ! ! ! ! ! interface FastEthernet0/0 ip address 200.200.200.2 255.255.255.0 duplex auto speed auto crypto map CMAP ! interface FastEthernet0/1 ip address 192.168.1.1 255.255.255.0 duplex auto speed auto ! no ip http server no ip http secure-server ip route 0.0.0.0 0.0.0.0 200.200.200.1 ! ! ! access-list 101 permit ip 192.168.1.0 0.0.0.255 192.168.2.0 0.0.0.255 ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 logging synchronous line aux 0 exec-timeout 0 0 privilege level 15 logging synchronous line vty 0 4 login ! ! end
Views: 6416 Ertan Erbek
Configuring GRE over IPSEC VPN (Tested with Ethereal)
 
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Lab 3.7 Configuring a Secure GRE Tunnel with the IOS CLI R1# show run ! hostname R1 ! interface Tunnel0 ip address 172.16.13.1 255.255.255.0 tunnel source FastEthernet0/0 tunnel destination 192.168.23.3 ! interface Loopback0 ip address 172.16.1.1 255.255.255.0 ! interface FastEthernet0/0 ip address 192.168.12.1 255.255.255.0 duplex full speed 100 crypto map mymap no shutdown ! router eigrp 1 network 192.168.12.0 no auto-summary !int router eigrp 2 network 172.16.0.0 no auto-summary ! end R2# show run hostname R2 ! interface FastEthernet0/0 ip address 192.168.12.2 255.255.255.0 duplex full speed 100 no shutdown ! interface Serial1/0 ip address 192.168.23.2 255.255.255.0 clock rate 64000 no shutdown ! router eigrp 1 network 192.168.12.0 network 192.168.23.0 no auto-summary ! R3# show run hostname R3 ! interface Loopback0 ip address 172.16.3.1 255.255.255.0 ! interface Tunnel0 ip address 172.16.13.3 255.255.255.0 tunnel source Serial1/0 tunnel destination 192.168.12.1 ! interface Serial1/0 ip address 192.168.23.3 255.255.255.0 crypto map mymap no shutdown ! router eigrp 1 network 192.168.23.0 no auto-summary ! router eigrp 2 network 172.16.0.0 no auto-summary ! line vty 0 4 password cisco login end ----------------------- ISAKMP Policies ----------------------- Step1: crypto isakmp policy 100 encr 3des hash md5 authentication pre-share group 5 lifetime 1600 ! Step2: crypto isakmp key CCNP-K3Y address 192.168.23.3 crypto ipsec transform-set VPN-LINK ah-md5-hmac esp-aes 256 ! Step3: crypto map DEMO 10 ipsec-isakmp set peer 192.168.23.3 set transform-set VPN-LINK match address 100 ! access-list 100 permit gre host 192.168.12.1 host 192.168.23.3 ------------ SWitch(Remote SPAN Configuration) ------------ hostname Switch ! monitor session 1 source interface fa1/5 monitor session 1 destination interface fa1/8 ! int range fa1/5 - 8 no shutdown switchport mode access speed 100 duplex half ! end
Views: 10009 ucatalg
Building Secure Mobile Apps With Firebase (Cloud Next '19)
 
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With Firebase's direct-from-mobile access, there are a lot of different potential attack vectors. In this talk, we'll walk through how to secure your app from malicious actors as well as discuss issues that you won't have to deal with while building on Firebase. Firebase authentication → https://bit.ly/2Uj42IG Get started with Cloud Firestore security rules → https://bit.ly/2Uj42IG Watch more: Next '19 Application Development Sessions here → https://bit.ly/Next19AppDev Next ‘19 All Sessions playlist → https://bit.ly/Next19AllSessions Subscribe to the GCP Channel → https://bit.ly/GCloudPlatform Speaker(s): Mike McDonald Session ID: DEV211 product:Firebase,Cloud Functions for Firebase; fullname:Mike McDonald;
MicroNugget Remembering the 5 Things to Negotiate in IKE Phase 1 (IPsec)
 
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In this MicroNugget, I'll provide an easy and fun way for remembering 5 specific items needed for building an IPsec tunnel.
Views: 27411 Keith Barker
Reversing Input Validation (Keygen part 1) - Pwn Adventure 3
 
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Part 15: We start reversing VerifyKey for the "Pirate's Treasure" challenge. This will take us several videos. In this first part we look at the input validation. 🌴 Playlist: https://www.youtube.com/playlist?list=PLhixgUqwRTjzzBeFSHXrw9DnQtssdAwgG -=[ 🔴 Stuff I use ]=- → Microphone:* https://amzn.to/2LW6ldx → Graphics tablet:* https://amzn.to/2C8djYj → Camera#1 for streaming:* https://amzn.to/2SJ66VM → Lens for streaming:* https://amzn.to/2CdG31I → Connect Camera#1 to PC:* https://amzn.to/2VDRhWj → Camera#2 for electronics:* https://amzn.to/2LWxehv → Lens for macro shots:* https://amzn.to/2C5tXrw → Keyboard:* https://amzn.to/2LZgCFD → Headphones:* https://amzn.to/2M2KhxW -=[ ❤️ Support ]=- → per Video: https://www.patreon.com/join/liveoverflow → per Month: https://www.youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join -=[ 🐕 Social ]=- → Twitter: https://twitter.com/LiveOverflow/ → Website: https://liveoverflow.com/ → Subreddit: https://www.reddit.com/r/LiveOverflow/ → Facebook: https://www.facebook.com/LiveOverflow/ -=[ 📄 P.S. ]=- All links with "*" are affiliate links. LiveOverflow / Security Flag GmbH is part of the Amazon Affiliate Partner Programm. #CTF #PwnAdventure #ReverseEngineering
Views: 66490 LiveOverflow
LabMinutes# SEC0023 - Cisco Router ASA Site-to-site (L2L) IPSec IKEv1 VPN with Pre-Shared Key
 
28:05
more Cisco VPN Video at http://www.labminutes.com/video/sec/vpn The video walks you through configuring site-to-site (L2L) IPSec VPN tunnel between Cisco router and ASA firewall. This is probably the simplest form of L2L IPSec using 'crypto map' and crypto ACL to match interesting traffic. You will see that you can apply the same configuration thought process to both router and ASA, while ASA having slight variation on the use of Tunnel-group and Group-policy. We will also look at how to restrict traffic over the tunnel using an access-list (ACL). Topic includes - L2L IPSec VPN between Router and ASA - Restricting VPN Traffic with Per-Tunnel ACL
Views: 11238 Lab Minutes
Cisco CCNA Packet Tracer Ultimate labs: Quality of Service (QoS) Lab. Answers Part 2
 
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Packet Tracer file (PT Version 7.1): https://goo.gl/twE2R2 Get the Packet Tracer course for only $10 by clicking here: https://goo.gl/vikgKN Get my ICND1 and ICND2 courses for $10 here: https://goo.gl/XR1xm9 (you will get ICND2 as a free bonus when you buy the ICND1 course). For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more. #CCNA #PacketTracer #CCENT QoS is the measure of transmission quality and service availability of a network (or internetworks). Service availability is a crucial foundation element of QoS. The network infrastructure must be designed to be highly available before you can successfully implement QoS. The target for High Availability is 99.999 % uptime, with only five minutes of downtime permitted per year. The transmission quality of the network is determined by the following factors: •Loss—A relative measure of the number of packets that were not received compared to the total number of packets transmitted. Loss is typically a function of availability. If the network is Highly Available, then loss during periods of non-congestion would be essentially zero. During periods of congestion, however, QoS mechanisms can determine which packets are more suitable to be selectively dropped to alleviate the congestion. •Delay—The finite amount of time it takes a packet to reach the receiving endpoint after being transmitted from the sending endpoint. In the case of voice, this is the amount of time it takes for a sound to travel from the speaker’s mouth to a listener’s ear. •Delay variation (Jitter)—The difference in the end-to-end delay between packets. For example, if one packet requires 100 ms to traverse the network from the source endpoint to the destination endpoint and the following packet requires 125 ms to make the same trip, then the delay variation is 25 ms. Each end station in a Voice over IP (VoIP) or Video over IP conversation uses a jitter buffer to smooth out changes in the arrival times of voice data packets. Although jitter buffers are dynamic and adaptive, they may not be able to compensate for instantaneous changes in arrival times of packets. This can lead to jitter buffer over-runs and under-runs, both of which result in an audible degradation of call quality. Translation: So here’s router 2. show run no quality of service configuration has been configured on this router. Interface that we’re working on is serial 0/2/0. So on router 2 class-map we could use different names here but I’m going to use the same names. We’ve got class maps for voice. Here we need to match on DSCP. So match ip dscp ef per these instructions we’re going to set the IP precedence to 5 but that needs to be done in the policy map. Next class is HTTP so class-map http match ip dscp af32 class-map icmp match ip dscp af11 So on router 2, we are matching DSCP values. We are not using NBAR. We are going to read the DSCP values of packets received on the serial interface and then we’re going to do something with it such as remark the DSCP values. So I’ll create a policy map called remark. The first class that we’re going to match is a voice and we’re told to set the IP precedence to 5. So set precedence and notice of the words we could either use the word critical or we could use a value such as 5. So I’m going to specify critical but notice what happens. Do show run It’s been changed to the number 5. So either will work but in the output you’ll see numbers. So you could either enter critical or 5 but it gets converted to the number. class http set precedence and we’ve been told to set the precedence to 3. class icmp and here we going to set the precedence to routine or 0. So again, show run Here are our class maps matching different traffic types. Here’s our policy map where we’re changing the DSCP values. In other words we are rewriting the type of service field or TOS field in the IP header and using precedence or rather than DSCP values. Next step is to bind the policy map. So interface serial 0/2/0 service-policy inbound or input in this case remark So we’ve completed the configuration. There are our class maps, here’s our policy map, scrolling down, here’s the service policy bound to the serial interface. I’ll save the router configuration..............
Views: 2596 David Bombal
Information Gathering / Recon - Pwn Adventure 3
 
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Part 3: We start to get technical by gathering some information. This is a crucial step in order to get a better understanding about the game in order to hack it. find_unique.py: https://github.com/LiveOverflow/PwnAdventure3/blob/master/tools/find_unique.py 🌴 Playlist: https://www.youtube.com/playlist?list=PLhixgUqwRTjzzBeFSHXrw9DnQtssdAwgG -=[ 🔴 Stuff I use ]=- → Microphone:* https://amzn.to/2LW6ldx → Graphics tablet:* https://amzn.to/2C8djYj → Camera#1 for streaming:* https://amzn.to/2SJ66VM → Lens for streaming:* https://amzn.to/2CdG31I → Connect Camera#1 to PC:* https://amzn.to/2VDRhWj → Camera#2 for electronics:* https://amzn.to/2LWxehv → Lens for macro shots:* https://amzn.to/2C5tXrw → Keyboard:* https://amzn.to/2LZgCFD → Headphones:* https://amzn.to/2M2KhxW -=[ ❤️ Support ]=- → per Video: https://www.patreon.com/join/liveoverflow → per Month: https://www.youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join -=[ 🐕 Social ]=- → Twitter: https://twitter.com/LiveOverflow/ → Website: https://liveoverflow.com/ → Subreddit: https://www.reddit.com/r/LiveOverflow/ → Facebook: https://www.facebook.com/LiveOverflow/ -=[ 📄 P.S. ]=- All links with "*" are affiliate links. LiveOverflow / Security Flag GmbH is part of the Amazon Affiliate Partner Programm. #PwnAdventure #CTF #NetworkSecurity
Views: 49761 LiveOverflow
GNS3 Labs: DMVPN, IPsec and NAT across BGP Internet routers: Answers Part 1
 
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Can you complete this DMVPN, IPsec, NAT& BGP lab? GNS3 Topology: https://goo.gl/udfNPL Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more. IPsec Overview: A secure network starts with a strong security policy that defines the freedom of access to information and dictates the deployment of security in the network. Cisco Systems offers many technology solutions for building a custom security solution for Internet, extranet, intranet, and remote access networks. These scalable solutions seamlessly interoperate to deploy enterprise-wide network security. Cisco System's IPsec delivers a key technology component for providing a total security solution. Cisco's IPsec offering provides privacy, integrity, and authenticity for transmitting sensitive information over the Internet. IPsec provides secure tunnels between two peers, such as two routers. You define which packets are considered sensitive and should be sent through these secure tunnels, and you define the parameters which should be used to protect these sensitive packets, by specifying characteristics of these tunnels. Then, when the IPsec peer sees such a sensitive packet, it sets up the appropriate secure tunnel and sends the packet through the tunnel to the remote peer. More accurately, these tunnels are sets of security associations (SAs) that are established between two IPsec peers. The security associations define which protocols and algorithms should be applied to sensitive packets, and also specify the keying material to be used by the two peers. Security associations are unidirectional and are established per security protocol (AH or ESP). With IPsec you define what traffic should be protected between two IPsec peers by configuring access lists and applying these access lists to interfaces by way of crypto map sets. Therefore, traffic can be selected based on source and destination address, and optionally Layer 4 protocol, and port. The access lists used for IPsec only determine which traffic should be protected by IPsec, not which traffic should be blocked or permitted through the interface. Separate access lists define blocking and permitting at the interface. A crypto map set can contain multiple entries, each with a different access list. The crypto map entries are searched in order—the router attempts to match the packet to the access list specified in that entry. It is good practice to place the most important crypto map entries at the top of the list. When a packet matches a permit entry in a particular access list, and the corresponding crypto map entry is tagged as cisco, then CET is triggered, and connections are established if necessary. If the crypto map entry is tagged as ipsec-isakmp, IPsec is triggered. If no security association exists that IPsec can use to protect this traffic to the peer, IPsec uses the Internet Key Exchange protocol (IKE) to negotiate with the remote peer to set up the necessary IPsec security associations on behalf of the data flow. The negotiation uses information specified in the crypto map entry as well as the data flow information from the specific access list entry. If the crypto map entry is tagged as ipsec-manual, IPsec is triggered. If no security association exists that IPsec can use to protect this traffic to the peer, the traffic is dropped. In this case, the security associations are installed via the configuration, without the intervention of IKE. If the security associations did not exist, IPsec did not have all of the necessary pieces configured. Once established, the set of security associations (outbound, to the peer) is then applied to the triggering packet as well as to subsequent applicable packets as those packets exit the router. Applicable packets are packets that match the same access list criteria that the original packet matched. For example, all applicable packets could be encrypted before being forwarded to the remote peer. The corresponding inbound security associations are used when processing the incoming traffic from that peer. If IKE is used to establish the security associations, the security associations will have lifetimes set so that they periodically expire and require renegotiation, thus providing an additional level of security. Multiple IPsec tunnels can exist between two peers to secure different data streams, with each tunnel using a separate set of security associations. For example, some data streams might be just authenticated while other data streams must both be encrypted and authenticated. Go here for more: https://www.cisco.com/c/en/us/td/docs/net_mgmt/vpn_solutions_center/2-0/ip_security/provisioning/guide/IPsecPG1.html
Views: 1166 David Bombal
GNS3 Labs: DMVPN, IPsec and NAT across BGP Internet routers: Answers Part 3
 
08:52
Can you complete this DMVPN, IPsec, NAT& BGP lab? GNS3 Topology: https://goo.gl/udfNPL Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more. IPsec Overview: A secure network starts with a strong security policy that defines the freedom of access to information and dictates the deployment of security in the network. Cisco Systems offers many technology solutions for building a custom security solution for Internet, extranet, intranet, and remote access networks. These scalable solutions seamlessly interoperate to deploy enterprise-wide network security. Cisco System's IPsec delivers a key technology component for providing a total security solution. Cisco's IPsec offering provides privacy, integrity, and authenticity for transmitting sensitive information over the Internet. IPsec provides secure tunnels between two peers, such as two routers. You define which packets are considered sensitive and should be sent through these secure tunnels, and you define the parameters which should be used to protect these sensitive packets, by specifying characteristics of these tunnels. Then, when the IPsec peer sees such a sensitive packet, it sets up the appropriate secure tunnel and sends the packet through the tunnel to the remote peer. More accurately, these tunnels are sets of security associations (SAs) that are established between two IPsec peers. The security associations define which protocols and algorithms should be applied to sensitive packets, and also specify the keying material to be used by the two peers. Security associations are unidirectional and are established per security protocol (AH or ESP). With IPsec you define what traffic should be protected between two IPsec peers by configuring access lists and applying these access lists to interfaces by way of crypto map sets. Therefore, traffic can be selected based on source and destination address, and optionally Layer 4 protocol, and port. The access lists used for IPsec only determine which traffic should be protected by IPsec, not which traffic should be blocked or permitted through the interface. Separate access lists define blocking and permitting at the interface. A crypto map set can contain multiple entries, each with a different access list. The crypto map entries are searched in order—the router attempts to match the packet to the access list specified in that entry. It is good practice to place the most important crypto map entries at the top of the list. When a packet matches a permit entry in a particular access list, and the corresponding crypto map entry is tagged as cisco, then CET is triggered, and connections are established if necessary. If the crypto map entry is tagged as ipsec-isakmp, IPsec is triggered. If no security association exists that IPsec can use to protect this traffic to the peer, IPsec uses the Internet Key Exchange protocol (IKE) to negotiate with the remote peer to set up the necessary IPsec security associations on behalf of the data flow. The negotiation uses information specified in the crypto map entry as well as the data flow information from the specific access list entry. If the crypto map entry is tagged as ipsec-manual, IPsec is triggered. If no security association exists that IPsec can use to protect this traffic to the peer, the traffic is dropped. In this case, the security associations are installed via the configuration, without the intervention of IKE. If the security associations did not exist, IPsec did not have all of the necessary pieces configured. Once established, the set of security associations (outbound, to the peer) is then applied to the triggering packet as well as to subsequent applicable packets as those packets exit the router. Applicable packets are packets that match the same access list criteria that the original packet matched. For example, all applicable packets could be encrypted before being forwarded to the remote peer. The corresponding inbound security associations are used when processing the incoming traffic from that peer. If IKE is used to establish the security associations, the security associations will have lifetimes set so that they periodically expire and require renegotiation, thus providing an additional level of security. Multiple IPsec tunnels can exist between two peers to secure different data streams, with each tunnel using a separate set of security associations. For example, some data streams might be just authenticated while other data streams must both be encrypted and authenticated. Go here for more: https://www.cisco.com/c/en/us/td/docs/net_mgmt/vpn_solutions_center/2-0/ip_security/provisioning/guide/IPsecPG1.html
Views: 1031 David Bombal
API Deobfuscator: Identifying Runtime - Obfuscated API Calls Via Memory Access Analysis
 
27:21
by Seokwoo Choi API wrapping technique is commonly used among malwares and code obfuscators. One of the advanced API wrapping techniques is runtime-obfuscation used by Themida. Runtime-obfuscation makes it difficult to reverse engineer by obfuscating API function on each run. So far, binary pattern matching or pattern-based code optimization techniques have been used to identify the original API functions from the runtime-obfuscated functions. Applying a new obfuscation pattern easily breaks these pattern-based approaches. In this talk, I present a more resilient API deobfuscation scheme based on memory access analysis. This method utilizes memory access pattern of runtime-obfuscation technique. The embedded runtime-obfuscator in the packed binary obfuscates one API function at a time. While an API function is obfuscated, each memory value of the instructions is read, the instruction is transformed into obfuscated instructions, and the obfuscated instructions are written into a newly allocated memory block. Thus, a set of memory write addresses during one API function obfuscation process is a superset of the corresponding obfuscated API function addresses. API deobfuscator is implemented based on the explained memory access analysis. Every memory write address is recorded after an API function is read from memory before the next API function is read. After each API function is obfuscated, a map from each API function into obfuscated function addresses is constructed. The original API functions are identified by applying the target addresses of obfuscated function calls to the map. The API deobfuscator utilizes Intel Pin to track memory accesses. The tool executes Themida packed binary files until the original entry point and restores every obfuscated API function call to the original API function call. The deobfuscated process can be analyzed by common debuggers such as Ollydbg.
Views: 748 Black Hat
AMP Conf 2019 - Day 2 Livestream
 
09:52:00
Welcome to Day 2 of #AMPConf 2019, live from Tokyo, Japan! The AMP team and community is bringing its yearly gathering to Tokyo for two days full of talks by developers for developers, all crafted to help you create a best-in-class user experience. Whether you're interested in rich animations, dynamic content, DevOps or monetization, we got you covered. Tune in and join us! View the schedule → http://bit.ly/2Sc94Wv AMP Conf '19 all sessions playlist → http://bit.ly/AmpConf2019 Take part in the discussion and get your questions answered by the AMP Team! Submit your questions on https://www.sli.do/ using #AMPConf Subscribe to The AMP Channel → http://bit.ly/2sejPYv Get started now at → https://amp.dev/
Views: 4066 The AMP Channel
ASA and Firewall Basic Settings using CLI
 
33:03
https://www.youtube.com/user/MrSaleh970/videos?view_as=subscriber Configured OSPF routing protocol on the routers Now you can ping from PC-3 the interface of 209.165.200.225 of Router1. # ping 209.165.200.225 • Use the show version to determine the aspects of this ASA device. # show version # show file system # show flash # show disk0 # hostname ASA # domain-name ccnasecurity.com • Configure the enable password as cisco # enable password cisco • For VLAN 1 interface (inside) IP address 192.168.1.0 /24, the security level of 100 # interface vlan 1 # nameif inside # ip address 192.168.1.1 255.255.255.0 # security-level 100 # interface vlan 2 # nameif outside # ip address 209.165.200.226 255.255.255.248 # security-level 0 • Use the following commands to display the status of the ASA interfaces # show interface ip brief # show ip address # show switch vlan ,. # ping 192.168.1.1 .# ping 209.165.200.226 should fail. # route outside 0.0.0.0 0.0.0.0 209.165.200.225 # show route • Verify that the ASA can ping Router1 S0/1/0 IP address 10.1.1.1 # ping 10.1.1.1 Create a network object inside-net and assign attributes using subnet and nat commands # object network inside-net # subnet 192.168.1.0 255.255.255.0 # nat (inside,outside) dynamic insterface # end. # show run # ping 209.165.200.225 Then run this command: # show nat We will create the class-map, policy-map and then service policy, and add the inspection of ICMP traffic to the policy map - Create the class map ( name is CLASS) # class-map CLASS # match default-inspection-traffic # exit - Next the policy map ( name is POLICY) # policy-map POLICY # class CLASS # inspect icmp # exit # service-policy POLICY global # dhcpd address 192.168.5-192.168.1.36 inside Now, enable the DHCP within the ASA to listen to DHCP client requests on the enable interface (inside) # dhcpd enable inside. - We will create a user named admin with a password of admin # username admin password admin - Now, we will configure AAA to use the local ASA database for SSH user authentication # aaa authentication ssh console local # crypto key generate rsa modulus 1024 # no ( when prompted). # ssh 192.168.1.0 255.255.255.0 inside # ssh 172.16.3.3 255.255.255.255 outside ( just one host). # ssh -l admin 209.165.200.226 # ssh – admin 192.168.1.1 • # interface vlan 3 • # ip address 192.168.2.1 255.255.255.0 # no forward interface vlan 1 # nameif dmz # security-level 70 - Let us now assign ASA physical interface E0/2 to DMZ VLAN 3 and enable the interface # interface ethernet0/2 # switchport access vlan 3 - Let us run few commands to verify what we did so far # show interface ip brief # show ip address # show switch vlan • Let us now configure static NAT to the DMZ server. # object network dmz-server # host 192.168.2.3 # nat (dmz,outside) static 209.165.200.227 • Now let us configure an ACL • # access-list DMZ-OUT permit icmp any host 192.168.2.3 # access-list DMZ-OUT permit tcp any host 192.168.2.3 eq 80 # access-group DMZ-OUT in interface outside.
Views: 166 Saleh Al-Moghrabi
Hacking a $20 Toy Helicopter into an Autonomous Drone
 
04:37
Support videos like this -- and get a free gift -- by becoming a Tested Premium Member: http://tested.com/membership We chat with Kyle Moore, a member of the Stanford Robotics Club, about his project that converts cheap remote-controlled toy helicopters into autonomous drones that can map and navigate around environments.
Views: 2960222 Adam Savage’s Tested
DEF CON 23 - Eijah - Crypto for Hackers
 
55:52
Hacking is hard. It takes passion, dedication, and an unwavering attention to detail. Hacking requires a breadth of knowledge spread across many domains. We need to have experience with different platforms, operating systems, software packages, tools, programming languages, and technology trends. Being overly deficient in any one of these areas can add hours to our hack, or even worse, bring us total failure. And while all of these things are important for a well-rounded hacker, one of the key areas that is often overlooked is cryptography. In an era dominated by security breaches, an understanding of encryption and hashing algorithms provides a tremendous advantage. We can better hone our attack vectors, especially when looking for security holes. A few years ago I released the first Blu-Ray device key, AA856A1BA814AB99FFDEBA6AEFBE1C04, by exploiting a vulnerability in an implementation of the AACS protocol. As hacks go, it was a simple one. But it was the knowledge of crypto that made it all possible. This presentation is an overview of the most common crypto routines helpful to hackers. We'll review the strengths and weaknesses of each algorithm, which ones to embrace, and which ones to avoid. You'll get C++ code examples, high-level wrapper classes, and an open-source library that implements all the algorithms. We'll even talk about creative ways to merge algorithms to further increase entropy and key strength. If you've ever wanted to learn how crypto can give you an advantage as a hacker, then this talk is for you. With this information you'll be able to maximize your hacks and better protect your personal data. Speaker Bio: Eijah is the founder of demonsaw, a secure and anonymous content sharing platform, and a Senior Programmer at a world-renowned game development studio. He has over 15 years of software development and IT Security experience. His career has covered a broad range of Internet and mid-range technologies, core security, and system architecture. Eijah has been a faculty member at multiple colleges, has spoken about security and development at conferences, and holds a master’s degree in Computer Science. Eijah is an active member of the hacking community and is an avid proponent of Internet freedom.
Views: 48440 DEFCONConference
GNS3 Labs: DMVPN, IPsec and NAT across BGP Internet routers: Answers Part 2
 
09:24
Can you complete this DMVPN, IPsec, NAT& BGP lab? GNS3 Topology: https://goo.gl/udfNPL Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more. IPsec Overview: A secure network starts with a strong security policy that defines the freedom of access to information and dictates the deployment of security in the network. Cisco Systems offers many technology solutions for building a custom security solution for Internet, extranet, intranet, and remote access networks. These scalable solutions seamlessly interoperate to deploy enterprise-wide network security. Cisco System's IPsec delivers a key technology component for providing a total security solution. Cisco's IPsec offering provides privacy, integrity, and authenticity for transmitting sensitive information over the Internet. IPsec provides secure tunnels between two peers, such as two routers. You define which packets are considered sensitive and should be sent through these secure tunnels, and you define the parameters which should be used to protect these sensitive packets, by specifying characteristics of these tunnels. Then, when the IPsec peer sees such a sensitive packet, it sets up the appropriate secure tunnel and sends the packet through the tunnel to the remote peer. More accurately, these tunnels are sets of security associations (SAs) that are established between two IPsec peers. The security associations define which protocols and algorithms should be applied to sensitive packets, and also specify the keying material to be used by the two peers. Security associations are unidirectional and are established per security protocol (AH or ESP). With IPsec you define what traffic should be protected between two IPsec peers by configuring access lists and applying these access lists to interfaces by way of crypto map sets. Therefore, traffic can be selected based on source and destination address, and optionally Layer 4 protocol, and port. The access lists used for IPsec only determine which traffic should be protected by IPsec, not which traffic should be blocked or permitted through the interface. Separate access lists define blocking and permitting at the interface. A crypto map set can contain multiple entries, each with a different access list. The crypto map entries are searched in order—the router attempts to match the packet to the access list specified in that entry. It is good practice to place the most important crypto map entries at the top of the list. When a packet matches a permit entry in a particular access list, and the corresponding crypto map entry is tagged as cisco, then CET is triggered, and connections are established if necessary. If the crypto map entry is tagged as ipsec-isakmp, IPsec is triggered. If no security association exists that IPsec can use to protect this traffic to the peer, IPsec uses the Internet Key Exchange protocol (IKE) to negotiate with the remote peer to set up the necessary IPsec security associations on behalf of the data flow. The negotiation uses information specified in the crypto map entry as well as the data flow information from the specific access list entry. If the crypto map entry is tagged as ipsec-manual, IPsec is triggered. If no security association exists that IPsec can use to protect this traffic to the peer, the traffic is dropped. In this case, the security associations are installed via the configuration, without the intervention of IKE. If the security associations did not exist, IPsec did not have all of the necessary pieces configured. Once established, the set of security associations (outbound, to the peer) is then applied to the triggering packet as well as to subsequent applicable packets as those packets exit the router. Applicable packets are packets that match the same access list criteria that the original packet matched. For example, all applicable packets could be encrypted before being forwarded to the remote peer. The corresponding inbound security associations are used when processing the incoming traffic from that peer. If IKE is used to establish the security associations, the security associations will have lifetimes set so that they periodically expire and require renegotiation, thus providing an additional level of security. Multiple IPsec tunnels can exist between two peers to secure different data streams, with each tunnel using a separate set of security associations. For example, some data streams might be just authenticated while other data streams must both be encrypted and authenticated. Go here for more: https://www.cisco.com/c/en/us/td/docs/net_mgmt/vpn_solutions_center/2-0/ip_security/provisioning/guide/IPsecPG1.html
Views: 1060 David Bombal
8. Hashing with Chaining
 
51:16
MIT 6.006 Introduction to Algorithms, Fall 2011 View the complete course: http://ocw.mit.edu/6-006F11 Instructor: Erik Demaine License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 315080 MIT OpenCourseWare
Stylish Star Allu Arjun Birthday Celebrations 2018 | TV5 News
 
05:39
Allu Arjun Birthday Celebrations 2018 'TV5 News' is 'Telugu Live news' which gives 24 Hours 'Live News' covering 'politics news', 'sports news', 'entertainment news'. 'TV5 News Live' is 'Telugu live Streaming' on YouTube giving 'hourly news' updates. This is our 'Telugu Live TV' 'Live Streaming' on YouTube which can be accessed from anywhere across the Globe. 'News Update', 'Telangana News', 'Andhra News' along with 'popular celebrities' 'live' with 'Chit Chat' on their 'latest film reviews' and 'Latest movie updates'. Here you can find 'Telugu Live Breaking News' 'Telugu YouTube Live News'. We are one of the leading 'Telugu Live News Channel'. You can watch 'Telugu Live News Updates' 'Telugu Live News TV5'. We have 'Telugu Live News Website' http://www.tv5news.in. You can watch 'TV5 Live Streaming' from our website. On YouTube Watch 'TV5 Telugu News Online HD'. For More Updates ► TV5 News Live : https://goo.gl/UPacax ► Subscribe to TV5 News Channel: http://goo.gl/NHJD9 ► Download TV5 Android App: http://goo.gl/8mMEOX ►Our Website : http://www.tv5news.in ► Like us on Facebook: http://www.facebook.com/tv5newschannel ► Follow us on Twitter: https://twitter.com/tv5newsnow ► Circle us on TV5 News Channel G+: https://plus.google.com/+tv5newschannel ► Follow us on Pinterest: https://www.pinterest.com/tv5newschannel
Views: 9341852 TV5 News
CSMA CD Carrier Sense Multiple Access  Collision Detection
 
18:35
In this playlist you will learn about the following topics Protocols, Layered Model Network components Uses of networks Traceroute and socket API Protocols and layering Reference models (Internet, OSI) History of the internet Physical and Direct Link Layer Simple link models (latency, bandwidth-delay product) Media and signals Modulation schemes (baseband, passband) Fundamental limits (Shannon) Framing Error detection schemes (checksum, CRC) Error correction schemes (Hamming) Retransmissions, Multiple access, Switching Retransmissions (ARQ) Multiplexing schemes (TDM. FDM) Random access / Ethernet (CSMA family) Wireless access / 802.11 Contention-free access / Token Ring LAN switching (switches vs. hubs, spanning tree, backward learning) Network Layer and Internetworking Datagram and virtual circuit models (IP, MPLS) IP addressing and forwarding (prefixes, longest matching prefix) IP helpers: ARP, DHCP Internetworking (fragmentation, path MTU discovery, ICMP) IPv4 and IPv6 Network Address Translation (NAT) Routing Shortest cost routing model Dijkstra's algorithm Flooding Distance Vector and Link-state Equal-cost multi-path routing Hierarchical routing (prefixes, aggregation, subnets) Multiple parties and policy (BGP) Transport Layer, Reliable Transport Sockets, ports and service APIs Reliable and unreliable delivery (TCP, UDP) Connection establishment and teardown Flow control and sliding windows Retransmission timeouts Congestion Control Fairness and Efficiency Additive Increase Multiplicative Decrease (AIMD) TCP congestion control (slow start, fast retransmission and recovery) Congestion avoidance (ECN) Web and Content Distribution Naming (DNS) Web protocols (HTTP, caching) Content Distribution Networks (CDNs) Peer-to-Peer (BitTorrent) Quality of Service and Real-Time Apps Streaming media and Conferencing Scheduling disciplines (FIFO, WFQ) Traffic shaping with Token Buckets Differentiated Services Rate and Delay Guarantees Optional: Network Security Encryption for Confidentiality and Authenticity Web security (SSL, DNSSEC) Wireless security (802.11i) Firewalls and Virtual Private Networks (VPNs) Distributed Denial of Service (DDOS) Computer Networks 1 OSI Model in Networking OSI model layers and their function (L1) 2 IP Address Basics: Classful Addressing dotted decimal notation 3 IP Address: Network ID and Host ID Network Mask 4 IP Address Subnet Supernet subnetmask 5 Classless IP Addressing: Subnet Mask, subnet block size, network address 6 Block Allocation of IP address Create subnets from block of IP address 7 Introduction to Interconnecting Devices: REPEATERS HUBS BRIDGE SWITCHES ROUTERS 8 VLAN: Virtual Lan concepts VLAN TRUNK and Switches 9 Address Resolution Protocol (ARP) and Reverse ARP explained Animated 10 Medium Access Control: Aloha and Slotted Aloha Protocol 11 Carrier Sense Multiple Access Protocol CSMA 12 CSMA/CD (Carrier Sense Multiple Access/ Collision Detection) 13 Network Address Translation (NAT) 14 Dynamic Host Configuration Protocol (DHCP) 15 Circuit Switching vs Packet Switching 16 Virtual Circuit Network Virtual Circuit switching 17 Domain Name Server (DNS) Name Server DNS how dns works 18 Internet Control Message Protocol (ICMP) ICMP protocol tutorial part 1 19 Internet Control Message Protocol (ICMP) : Error Message (Part 2) 20 Stop and Wait Protocol Stop and Wair ARQ Stop and Wait Flow control 21 GO BACK N ARQ Protocol Go back N sliding window 22 SELECTIVE REPEAT ARQ selective repeat sliding window protocol 23 Authentication Protocol Man In Middle Attack Replay Attack Nonce 24 Introduction to Public Key Cryptography Public Key Cryptography animation 25 Introduction to Digital Signature Public Key cryptography 26 RSA Algorithm and public key encryption rivest shamir adleman algorithm 27 Message Digest and Digital Signature Cryptographic Hash Function 28 Certification Authority (CA) Digital Certificate 29 Secure EMail How To Public Private Key Encryption Secure E-Mail PGP
Views: 14 Vijay S
Battlefield 4 - Parcel Storm - Conquest - Hardcore -  Gameplay
 
15:20
Welcome! please subscribe! Consulting company: http://milcivconsulting.se/ fitness company Sweden: http://www.fitnessnisse.se/ host your own website/blog/store: http://one.me/enaxeavd Mining cryprocurrecys with autoselection https://minergate.com/a/20c991ecd9f17f728cf23016 P2P Crypto LENDING: https://btcpop.co/Home/32249/youtube please donate bitcoin address: 1KV7iwBSiAjyGe9h2MVYXdiaMX87VpbHyZ Ethereum address: 0xA69fC38CE7693a02C01Cc111dCC1Ea0Cd516cd2B Every small donation as much as $0.01 Will help me out a ton! :) thank you! _ Embrace unrivaled destruction in Battlefield 4™. Revel in the glorious chaos of all-out war packed with rewarding, tactical challenges in an interactive environment. Demolish the buildings shielding your enemy and lead an assault from the back of a gun boat. You have the freedom to do more and be more, playing to your strengths and carving your own path to victory. There is no comparison. Immerse yourself in the glorious chaos of all-out war. Key Features: Dynamic battlefields. These interactive environments react to your actions in real-time, so go ahead and trigger a shipwreck or flood the streets. Your opponents won't know what hit 'em. More vehicles, more destruction, more freedom. Experience an unmatched level of all-out war with more vehicles and destruction than ever before. Plus, the huge scope and scale of the maps grants you the freedom to play to your strengths and carve your own path to victory. Launch an amphibious assault. Man the guns and face the storm to bring down your opponents. Dominate land, air, and sea with all-new, intense water-based vehicular combat. Intense single-player campaign. Battlefield 4™ features an intense, character-driven campaign that starts with the evacuation of American VIPs from Shanghai and follows your squad's struggle to find its way home. _ Channel Keywords Tom Clancy's Ghost Recon Wildlands Gameplay weapons Squad gameplay PVP multiplayer Call Of Duty WW2 2017 gameplay Passive income ideas and opportunities Military videos cool Rich Piana 5& Nutrition Supplements crazy shit Passive income Movies music games Altcoin Bitcoin CryptoCurrency _
Views: 4 TheRealNisse
10. Open Addressing, Cryptographic Hashing
 
50:55
MIT 6.006 Introduction to Algorithms, Fall 2011 View the complete course: http://ocw.mit.edu/6-006F11 Instructor: Srini Devadas License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 86682 MIT OpenCourseWare
Microsoft Build 2019 - LIVE Stream - Day 2 (May 7)
 
09:49:06
To watch more sessions and ask questions live on air head over to https://aka.ms/MicrosoftBuildLive
Views: 15165 Microsoft Developer
Five of the Best Email Apps on iOS for 2019
 
08:14
Email apps are a popular App Store category for one simple reason - almost all of us need to access email on our iPhones and iPads. While Apple has its own Mail app built into iOS devices, some people want a more feature rich experience. Luckily there are plenty of developers out there who are trying to create the perfect iOS inbox, but it's hard to sort through the dozens of email apps available. We dove into the App Store in our latest YouTube video and rounded up five of the best email apps on iOS for 2019 Read more - https://www.macrumors.com/guide/best-email-apps-ios/ Spike - https://apple.co/2UwKRXs Polymail - https://apple.co/2Sh9BWo Airmail - https://apple.co/2GbnK0W Spark - https://apple.co/2CSXIvX Edison - https://apple.co/2DMfsuO
Views: 42482 MacRumors
The Best Galaxy S9 Features You Might've Missed
 
07:53
Sponsored by iOttie. Go to http://amzn.to/2Dr3l2I and use discount code "iOttie15" to get a 15% discount on the ION Wireless Plus fast charging pad featured in the video! (Discount good through March 30.) [GALAXY S9 FEATURES TOUR] As of the day this video hits the feeds, you can officially buy the Samsung Galaxy S9. It’s an excellent smartphone, but it’s so similar to its predecessor that, in your haste to move into it, you might miss some great options both new and old. So join me for a look at my favorite under-represented Galaxy S9 features in a change of pace from the usual round of reviews and first-looks – and if you've got favorite Galaxy S9 features of your own to share, please do so down in the comments! [SUBSCRIBE] https://www.youtube.com/channel/UCSOpcUkE-is7u7c4AkLgqTw?sub_confirmation=1 [PRODUCTS IN THIS VIDEO] Samsung Galaxy S9: http://mrmobile.tech/4m9 [LINKS] Top 10 Essential Galaxy S9 Tips [The Tech Chap]: https://www.youtube.com/watch?v=aWoz94lGn08 bxActions Bixby Remapper [Google Play]: https://play.google.com/store/apps/details?id=com.jamworks.bxactions&hl=en_US Animated Galaxy S9 border wallpaper [lock screen only]: http://www.samsung.com/global/themestore/index.html?appId=sec.com.S8exclusivecolorfulMar.common.wallpaperanimated&SITE_CODE=us Galaxy S9 Review [Android Central]: https://www.androidcentral.com/samsung-galaxy-s9-review [MUSIC] “Days and Days” by Eternity Bro, available at Premium Beat: https://www.premiumbeat.com/royalty_free_music/songs/days-and-days “Live Up” by Cymatix, available at Premium Beat: https://www.premiumbeat.com/royalty_free_music/songs/live-up “True Persistence” by Cymatix, available at Premium Beat: https://www.premiumbeat.com/royalty-free-tracks/true-persistence [SOCIALIZE] http://facebook.com/themrmobile http://instagram.com/themrmobile http://twitter.com/themrmobile https://www.snapchat.com/add/mrmobilesnaps http://mrmobile.tech [DISCLOSURE] This post may contain affiliate links. See Mobile Nations' disclosure policy for more details: http://www.mobilenations.com/external-links
Blockchain Beyond Bitcoin - with Vinay Gupta | Virtual Futures Salon
 
01:32:20
Virtual Futures presents tech-visionary Vinay Gupta to dicuss cryptocurrencies and the uptake of the blockchain in all its applications. This event is organised in partnership with the Department of Economics at the University of Warwick as part of their 360 Lecture Series. Blockchain, also known as distributed ledger technology, has attracted a great deal of attention due to the hype surrounding cryptocurrencies like Bitcoin. Whilst blockchain technology might be able to drive economic change globally, the applications are innumerable. Among others, the implications include empowering impoverished individuals by bypassing banks for payments, generating personalized identities for voting, securing healthcare data, improving supply chain logistics, and allowing business to be carried out transparently. Vinay will share his thoughts on how a technology that permits secure and transparent solutions might transform the next decade. Vinay Gupta is a leading figure in the blockchain space. He is the co-founder of Mattereum, co-ordinated the release of the blockchain platform Ethereum in July 2015, and was strategic architect for ConsenSys, a technology hub focusing on the Ethereum blockchain and related applications. He was the designer of the National Blockchain Strategy for Dubai and is a partner at Hexayurt Capital, the technology-focused VC firm behind the Internet of Agreements. He has been involved in commercial software development since 1992 and his experience as a programmer and visionary has covered fields as diverse as medical imaging, flight simulation, computer graphics, cryptographic applications and the web. In conversation with Luke Robert Mason, Director of Virtual Futures. --- Follow the conversation on Twitter using #VFSalon Support Virtual Futures on Patreon: http://patreon.com/virtualfutures Find out more: http://virtualfutures.co.uk --- Credits Produced by Virtual Futures Camera by Jason ‘Jay’ Langdell: http://jam-av.com Sound by Luke Robert Mason Lighting by Ian O’Donoghue Edited by Luke Robert Mason Thanks to Bozena Beauclair Thanks to Anirudh Pai Thanks to Jeremy Smith Thanks to Charlotte White Hosted at the University of Warwick: http://go.warwick.ac.uk/economics --- Follow Virtual Futures on Social Media Twitter: http://twitter.com/virtualfutures Facebook: http://facebook.com/virtualfutures Instagram: http://instagram.com/virtualfutures Medium: http://medium.com/@virtualfutures SoundCloud: http://soundcloud.com/virtualfutures YouTube: http://youtube.com/virtualfutures --- Our Recording Equipment (Affiliate Links) RØDE Procaster Broadcast Dynamic Microphone: http://amzn.to/2wClVSx RØDE PSM1 Microphone Shock Mount: http://amzn.to/2wCh8Ri RØDE PSA1 Swivel Mount Studio Microphone Boom Arm: http://amzn.to/2f9tVYo Stagg 3m High Quality XLR to XLR Plug Microphone Cable: http://amzn.to/2wCjrnf Stagg 10m High Quality XLR to XLR Plug Microphone Cable: http://amzn.to/2y2En7y Zoom H6 Handy Recorder: http://amzn.to/2woqxg0 Zoom Q2n Handy Video Recorder: http://amzn.to/2g3gnxQ Canon EOS 80D: http://amzn.to/2eZo1oQ Canon EF 50 mm 1.8 STM Lens: http://amzn.to/2yQ37k5 Canon EF-S 18-135mm f/3.5-5.6 IS STM Lens: http://amzn.to/2y2EakM Manfrotto Befree Live Aluminium Travel Tripod with Fluid Head: http://amzn.to/2y257VT Sennheiser EW 100-ENG G3-GB Portable System: http://amzn.to/2H38Bgd
Views: 7196 Virtual Futures
Global variable Buffer Overflow to leak memory - 34C3 CTF readme_revenge (pwn)
 
16:13
Two years ago I failed to solve the readme challenge at the 32c3ctf. Since then I have learned a lot and I got another chance! readme 32c3ctf: https://www.youtube.com/watch?v=wLsckMfScOg readme_revenge: https://archive.aachen.ccc.de/34c3ctf.ccc.ac/challenges/index.html What is CTF? https://www.youtube.com/watch?v=8ev9ZX9J45A Why you should play CTFs: https://www.youtube.com/watch?v=rfjV8XukxO8 -=[ 🔴 Stuff I use ]=- → Microphone:* https://amzn.to/2LW6ldx → Graphics tablet:* https://amzn.to/2C8djYj → Camera#1 for streaming:* https://amzn.to/2SJ66VM → Lens for streaming:* https://amzn.to/2CdG31I → Connect Camera#1 to PC:* https://amzn.to/2VDRhWj → Camera#2 for electronics:* https://amzn.to/2LWxehv → Lens for macro shots:* https://amzn.to/2C5tXrw → Keyboard:* https://amzn.to/2LZgCFD → Headphones:* https://amzn.to/2M2KhxW -=[ ❤️ Support ]=- → per Video: https://www.patreon.com/join/liveoverflow → per Month: https://www.youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join -=[ 🐕 Social ]=- → Twitter: https://twitter.com/LiveOverflow/ → Website: https://liveoverflow.com/ → Subreddit: https://www.reddit.com/r/LiveOverflow/ → Facebook: https://www.facebook.com/LiveOverflow/ -=[ 📄 P.S. ]=- All links with "*" are affiliate links. LiveOverflow / Security Flag GmbH is part of the Amazon Affiliate Partner Programm. #CTF #BinaryExploitation
Views: 39637 LiveOverflow
Bitcoin: "Failing to Scale" - Prague 2016
 
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In this talk, Andreas looks at scaling as an ongoing process. Using examples from the history of the Internet -- which has "failed to scale, gracefully, for 25 years" --- he discusses the scaling debate and looks at how Bitcoin will scale over the next several years. This talk took place on on March 22nd 2016 for the Institute of Cryptoanarchy's Paralelni Polis event in Prague, Czech Republic / Czechia. RELATED: Exponential Innovation: Hackers Congress - https://youtu.be/n2yD1PSWBU0 Scaling complex systems - https://youtu.be/dm9m1oQr6Ks Layered scaling and privacy - https://youtu.be/4w-bjUhpf_Q The internet will eat your business - https://youtu.be/DXLZSgf4b8Q Delivering Liberty, At Scale - https://youtu.be/AecPrwqjbGw Bitcoin, Payment Security, and Consumer Protection - https://youtu.be/qMkGfB8X58o Worse Than Useless: Financial Surveillance - https://youtu.be/n4F-h4xuXMk The Killer App: Engineering the Properties of Money - https://youtu.be/MxIrc1rxhyI Beyond Price: Bitcoin's Impact on the Future - https://youtu.be/rvwVbRQ5Ysc Introduction to the Internet of Money - https://youtu.be/rc744Z9IjhY The Lightning Network - https://www.youtube.com/playlist?list=PLPQwGV1aLnTurL4wU_y3jOhBi9rrpsYyi Altcoins and the scaling debate - https://youtu.be/slbpdW-H3yk Scaling is a moving target - https://youtu.be/pT9kJq_Ogrk Scaling, trust, and trade-offs - https://youtu.be/vCxmHwqyJWU From barter to abstract money - https://youtu.be/KYsppZoHguQ Fungibility, privacy, anonymity - https://youtu.be/y3s8c7YDtXU Coinbase vs. the IRS - https://youtu.be/YQJk-5ZYmoM Could governments take over exchanges? - https://youtu.be/9PrJQeKl9w4 Alternatives to centralised exchanges - https://youtu.be/3jmeJjhH84s HODLing and the "get free" scheme - https://youtu.be/MhOwmsW1YNI Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in bitcoin. Follow on Twitter: @aantonop https://twitter.com/aantonop Website: https://antonopoulos.com/ He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters. THE INTERNET OF MONEY, v1: https://www.amazon.co.uk/Internet-Money-collection-Andreas-Antonopoulos/dp/1537000454/ref=asap_bc?ie=UTF8 [NEW] THE INTERNET OF MONEY, v2: https://www.amazon.com/Internet-Money-Andreas-M-Antonopoulos/dp/194791006X/ref=asap_bc?ie=UTF8 Highlights from "The Internet of Money" (Volume 2): https://youtu.be/Qkjm5E5BeB8 MASTERING BITCOIN: https://www.amazon.co.uk/Mastering-Bitcoin-Unlocking-Digital-Cryptocurrencies/dp/1449374042 [NEW] MASTERING BITCOIN, 2nd Edition: https://www.amazon.com/Mastering-Bitcoin-Programming-Open-Blockchain/dp/1491954388 Subscribe to the channel to learn more about Bitcoin & open blockchains! If you want early-access to talks and a chance to participate in a monthly LIVE Q&A with Andreas, become a patron: https://www.patreon.com/aantonop
Views: 26736 aantonop
Call of Duty  Black Ops III knife test with billkeyz
 
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supply drop playlist: https://www.youtube.com/playlist?list... https://www.callofduty.com/blackops3 What are the Copyrights For Black Ops 3 on Youtube Hi, I'm a Youtuber not to big around 150 subscribers. I was wondering if I could post Call of Duty: Black Ops 3 STORY. On YoutubeI know a lot of others have like live streams and all but I also know there really big. Could you request permission from an email or contact somebody. I know this is a serious topic because I can get into a lot of trouble & get my Youtube shut down. So Could somebody please get back to me with some suggestions or some emails address. I'm just wondering and still in thought but it would be a really treat to my subscribers since they all love the game and I thought it would help me gain fans as well. Treyarch has released a new game settings update for Call of Duty: Black Ops 3 on PS4 and Xbox One. The version number should be 37.11.18.4* (*last number may vary by platform). The new update includes: Higher specialist earning power in Search & Destory Hardwired has been buffed to better counter Sixth Sense perk Fix for a spawn issue for when waiting to select class Stat losses for Arena when quitting games Fixes for issues when prestiging weapons More For those of you who are wondering what type of timed release deal Activision and Sony have worked out for Call of Duty: Black Ops III DLC, it looks like you can expect the exact same set-up the publisher had with Microsoft in the past, only now resulting in earlier launches on the PlayStation platform. According to a recent announcement, Sony representative Adam Boyes informed Kotaku during E3 2015 that the exclusivity deal for Black Ops III will result in all post-launch content for the game arriving on the PlayStation 4 30 days before the Xbox One and PC. The ball got rolling on this news during the PlayStation press conference during this year’s big trade show. In recent years, Xbox platforms have received Call of Duty DLC a month prior to all other platforms. Following a brief gameplay reveal during the Sony presser last week, it was stated that PlayStation is the “new home for Call of Duty,” with all additional content launching first on those platforms. To help kick off PlayStation Experience in San Francisco, today we are thrilled to share the first details of Call of Duty: Black Ops 3’s first DLC map pack and some exciting news for the upcoming Call of Duty World League season. Revealed during this morning’s keynote address, the first of four planned DLC map packs will be Call of Duty: Black Ops 3 Awakening and it will arrive first on PlayStation 4. Awakening features four new multiplayer maps—Skyjacked, Rise, Splash, and Gauntlet—and the next chapter in the Black Ops 3 Zombies saga, Der Eisendrachen.
Views: 27 Billy Kiff
Chrome Dev Summit 2018 - Day 2 Livestream
 
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Join us at the 6th Chrome Dev Summit to engage with Chrome engineers and leading web developers for a two-day exploration of modern web experiences. 33:18 - Day 2 Keynote 1:02:24 - Feature Policy & the Well-Lit Path for Web Development 2:02:46 - virtual-scroller: Let there be less (DOM) 2:37:50 - A Quest to Guarantee Responsiveness: Scheduling On and Off the Main Thread 3:15:45 - Architecting Web Apps - Lights, Camera, Action! 5:05:18 - From Low Friction to Zero Friction with Web Packaging and Portals 5:34:16 - State of Houdini 6:00:23 - Building Engaging Immersive Experiences 7:03:30 - Using WebAssembly and Threads 7:29:55 - The Virtue of Laziness: Leveraging Incrementality for Faster Web UI 8:00:40 - Chrome OS: Ready for Web Development We'll be diving deep into what it means to build a fast, high quality web experience using modern web technologies and best practices, as well as looking at the new and exciting capabilities coming to the web platform. Watch all the session recordings in the All Sessions playlist → https://bit.ly/CDS18-AllSessions Find the event schedule and more info on the website → http://bit.ly/2AA1R87 Subscribe to the Chrome Developers channel! → http://bit.ly/ChromeDevs1 Event music by Terra Monk → http://bit.ly/2B2BrMO
DEF CON 22 - Kenneth White and Matthew Green - The Open Crypto Audit Project
 
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Slides here: https://defcon.org/images/defcon-22/dc-22-presentations/White-Green/DEFCON-22-Kenneth-White-and-Matthew-Green-The-Open-Crypto-Audit-Project-Updated.pdf The Open Crypto Audit Project Kenneth White CO-FOUNDER, OPEN CRYPTO AUDIT PROJECT Matthew Green RESEARCH PROFESSOR, JOHNS HOPKINS UNIVERSITY Join us for the story of the origins and history of the Open Crypto Audit Project (OCAP). OCAP is a community-driven global initiative which grew out of the first comprehensive public audit and cryptanalysis of the widely used encryption software TrueCrypt®. Our charter is to provide technical assistance to free and open source software projects in the public interest. We serve primarily as a coordinator for volunteers and as a funding mechanism for technical experts in security, software engineering, and cryptography. We conduct analysis and research on FOSS and other widely software, and provide highly specialized technical assistance, analysis and research on free and open source software. This talk will present how we audited TrueCrypt, detailing both the Phase I security assessment, and the Phase II cryptanalysis. Looking forward, in light of GotoFail and HeartBleed, we will discuss future plans for our next audit projects of other open source critical infrastructure. Kenneth White is a co-founder of the CBX Group, and formerly principal scientist and senior security R&D engineer at Social & Scientific Systems. His work focuses on cloud security, machine learning, and distributed database architecture. At SSS, White led the Biomedical Informatics team that designed and runs the operations center for the largest clinical trial network in the world, with research centers in over 100 countries. Together with Matthew Green, White co-founded the TrueCrypt audit project, a community-driven initiative to conduct the first comprehensive cryptanalysis and public security audit of the widely used TrueCrypt encryption software. White holds a MEd from Harvard and is a PhD candidate in neuroscience and cognitive science, with research focusing on expert systems, real-time classification and machine learning. He is a technical reviewer for the Software Engineering Institute, and publishes and speaks frequently on computational neuroscience, signal processing, and security engineering. Twitter: @kennwhite Matthew D. Green, PhD is a professor of computer science at Johns Hopkins University. He teaches applied cryptography and builds secure systems. Green trained under Susan Hohenberger and Avi Rubin, and his research includes techniques for privacy-enhanced information storage, anonymous payment systems, and bilinear map-based cryptography. Green formerly served as a senior research staff member at AT&T Labs. Together with Kenneth White, he co-founded the TrueCrypt audit project, a community-driven initiative to conduct the first comprehensive cryptanalysis and public security audit of the widely used TrueCrypt encryption software. He blogs at Cryptography Engineering, and talks about cryptography and privacy. Twitter: @matthew_d_green Web: https://opencryptoaudit.org/people
Views: 3432 DEFCONConference
Blitzscaling 11: Patrick Collison on Hiring at Stripe and the Role of a Product-Focused CEO
 
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This is session 11 of Technology-enabled Blitzscaling, a Stanford University class taught by Reid Hoffman, John Lilly, Allen Blue, and Chris Yeh. This class features John Lilly interviewing Patrick Collison, the Co-Founder of Stripe.
Views: 48680 Greylock Partners
NEO DevCon 2019 DAY 1 Live Streaming 2019/02/16
 
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NEO DevCon 2019 DAY 1 Live Streaming 2019/02/16 Timestamps: 6:42 The Promise of the Smart Economy - Da Hongfei, Founder 42:35 Possible Improvements in NEO 3.0 - Erik Zhang, Founder 1:04:25 NEO Global Growth - Zhao Chen, General Manager, NGD --- Break --- 1:44:44 Blockchain for Digital Transformation - Drew Gude, Managing Director, Microsoft Digital Worldwide 2:06:48 Big Trend in Blockchain - Miha Kralj, Managing Director, Accenture 2:23:42 Regulator’s Perspective in Blockchain - Dr. Joseph Williams, ICT Industry Sector Lead 2:37:00 Blockchain Use Cases and Enterprise Needs on the Microsoft Platform - Pablo Junco, Director, Worldwide Apps Solutions Strategy, Microsoft --- Break --- 4:01:43 NEO Protocol Quality Assurance - Peter Lin, R&D Director, NGD 4:23:35 NEO Developer Guide - Longfei Wang - Software Developer, NGD 4:35:25 Seraph ID – Self-sovereign Identity on NEO - Waldemar Scherer, Head of Enterprise Blockchain 4:54:50 Panel: About Decentralization - Waldemar Scherer; Fabio C.Canesin; Peter Lin; Douwe van de Ruit 5:18:00 Many Ways to Double Spend Your Cryptocurrency - Dr. Zhiniang Peng, Security Researcher, Qihoo 360 5:34:40 Building Trustworthy Blockchain Ecosystems - Dr. Ronghui Gu, Certik, CEO 6:09:51 XLang - Harry Pierson, Program Manager for Xlang, Microsoft 6:30:08 Panel: How to Expand Developer Communities - Brett Rhodes ("Edgegasm") et al. 6:55:00 Cryptoeconomics and the Future of the Global Economy - Dr. Chris Berg, Senior Research fellow, RMIT 7:12:40 NEO.GAME - Blockchain Game One Stop Solution - John Wang, Ecosystem Growth Manager, NGD 7:26:52 NEO Friends Initiative - Tamar Salant, Ecosystem Growth Manager, NGD For more info, please visit: https://devcon.neo.org/
Views: 9746 NEO Smart Economy
Overview on S-Box Design Principles
 
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Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 28992 nptelhrd
Web vs. Native Mobile Apps: How to Choose the Right Approach (Cloud Next '19)
 
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Mobile web and native application technologies have evolved tremendously in recent years. In this session, we’ll help you understand which approaches are right for your digital transformation efforts. You’ll understand the trade-offs for each technology, and we’ll discuss best practices on which architectures fit the needs for projects in your organization. Choose the Right Approach → http://bit.ly/2Ui1ef6 Watch more: Next '19 Mobility & Devices Sessions here → https://bit.ly/Next19MobilityDevices Next ‘19 All Sessions playlist → https://bit.ly/Next19AllSessions Subscribe to the GCP Channel → https://bit.ly/GCloudPlatform Speaker(s): Sean Ginevan, Jon Markoff Session ID: MD111 product:Android Enterprise; fullname:Sean Ginevan,Jon Markoff;
22. Cryptography: Encryption
 
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MIT 6.046J Design and Analysis of Algorithms, Spring 2015 View the complete course: http://ocw.mit.edu/6-046JS15 Instructor: Srinivas Devadas In this lecture, Professor Devadas continues with cryptography, introducing encryption methods. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 17919 MIT OpenCourseWare