Description

This article is from the SSH - Secure Shell FAQ, by Thomas Koenig Thomas.Koenig@ciw.uni-karlsruhe.de with numerous contributions by others.

4.5. Can I use ssh to securely connect two subnets across the Inter- net?

You can run PPP over a regular ssh connection. See
http://www.inka.de/~bigred/sw/ssh-ppp-new.txt for a working solution.
It's a good idea to enable compression for this.

However, this may cause problems for forwarding TCP connections,
because both the TCP connection over which ssh runs and a TCP
connection forwarded over the PPP/ssh tunnel may retransmit at the
same time. In this case, it is better to use encrypted IP tunneling
via UDP. A possible implementation of this is
http://www.inka.de/~bigred/devel/cipe.html.

 

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security, SSH, Secure Shell