[TriLUG] ssh 'through' a firewall

Ralph Blach rcblach at blach.dnsalias.org
Sat Apr 24 09:43:30 EDT 2004


Try

http://vtun.sourceforge.net/

It is a userland tunnling software that is very easy to setup and
run.

I recomend that you give it a try.

Chip
Tanner Lovelace wrote:
> Douglas Kojetin said the following on 4/23/04 7:29 PM:
> 
>> hi all-
>>
>> i ssh to a computer computer behind a firewall that has access to 
>> other computers behind the network that i frequently need to ssh to.  
>> what i normally do is
>>
>> ssh user at firstcomputer
>> ssh user at secondcomputer
>>
>> is there a shortcut i can take so that i don't ssh twice?  i've setup 
>> aliases and 'no-password authentication' to ease things, but it would 
>> be nice to do the above in one command if possible.
> 
> 
> You could have the first ssh execute the second.  If you just put the
> two commands together, you'll noticed, however, that it doesn't work.
> Ssh doesn't automatically allocate a psuedo-tty when executing a command
> so you must force it to using the -t option.
> 
> So, try:
> 
> ssh -t user at firstcomputer ssh user at secondcomputer
> 
> That should do what you want.
> 
> Cheers,
> Tanner




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