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What is the difference between a tunnel, a VPN tunnel and an SSH tunnel? According to Wikipedia, "tunneling" is:
Tunneling typically contrasts with a layered protocol model such as those of OSI or TCP/IP. The delivery protocol usually (but not always) operates at a higher level in the model than does the payload protocol, or at the same level.
But that doesn't really mean much to me. So is a tunnel like HTTP being used to carry a TCP payload?
I guess all this "tunnel terminology" would make sense with a few practical (real-life) examples.
Thanks @David - thats the difference between VPN and SSH, but what about this tunneling stuff? – pnongrata – 2012-06-13T19:39:31.840
1The SSH tunnel forwards TCP connections only. A VPN forwards IP packets or network frames. – superuser – 2012-06-13T19:41:05.317