A good source of info on SSH I just found is:
"Creating a VPN with the Unix Secure Shell"
"SSH can also be used to forward X11 connections for
secure X Window System sessions. It does this by creating
a fake X server on the same machine from which the SSH client
is run. It then "proxies" the connection and forwards it to
a real X server (running the SSH daemon) over a secure connection.
SSH also has the capability to redirect arbitrary TCP/IP ports
(though only root can redirect privileged ports). It can redirect
a port on a local side to a port on the remote side, or redirect
a port on the remote side to a port on the local side. When such
a connection is in place, any data sent through the redirected ports
will be sent through the secure connection."
> -----Original Message-----
> From: McDaid, Aaron
> Sent: 22 June 2000 15:31
>> > You can run X over ssh can't you?
>> Anyway, I've always wanted to know how the hell
> that worked. What's the processes DISPLAY variable.
> I suppose it couldnt' be the target display (your
> machine) because that would defeat the purpose (a
> sniffer could see the plain X packets.
>> Does it point to some kinda X Server proxy thingy
> on the server which pumps it through the ssh session
> and then the ssh client forwards it the the target
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