DEF CON 9 - Dan Kaminsky - Gateway Cryptography *
Channel: DEFCONConference
Date: 2015-11-17

Description from DEF CON 9 Speaker’s Page: 

Gateway Cryptography:  Hacking Impossible Tunnels Through Improbable Networks with OpenSSH and the GNU Privacy Guard

1) Theory of Gateway Cryptography 
2) Methods of securely connecting mutually firewalled hosts 
3) Turning any SSHD into a VPN termination point (without using PPP over SSH) 
4) Dynamically Rekeyed OpenPGP 
5) PPTP over SSH 
6) Securely SUing to root 
7) Robustifying live-configuration of OpenSSH 
8) SFTP Compatibility Mode (implementing everything with cat, tar, and tail)