These are my links for 2 dic 2014 through 3 dic 2014:

• VPN over SSH – ArchWiki – There are several ways to set up a Virtual Private Network through SSH. Note that, while this may be useful from time to time, it may not be a full replacement for a regular VPN.
• Simplify Your Life With an SSH Config File · Nerderati – If you're anything like me, you probably log in and out of a half dozen remote servers (or these days, local virtual machines) on a daily basis. And if you're even more like me, you have trouble remembering all of the various usernames, remote addresses and command line options for things like specifying a non-standard connection port or forwarding local ports to the remote machine[…]
• SSH Tips and Tricks | LUG@GT – This presentation is updated from “SSH Tips and Tricks given on Wed. Feb 28th, 2007