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Re: ssh tunneling (was firewall configuration)

> Just for curiosity and the fact that I know very little about ssh tunnels.
> Is it possible to open an ssh tunnel to a server through another computer?
> i.e. I have my workstation. I want open a connection to another workstation,
> and from that computer open another tunnel to my server. Then from my
> first workstation, could I connect directly to my server through the
> two tunnels?
>
Yes it is, let me show you an example :

From my local tibook :

Sudo ssh -L 10548:127.0.0.1:548 email@hidden
Type password for root then password for email@hidden

(if you now connect to afp://my.server.net:548, you can mount the server's
volume on the tibook's desktop

Then

On the remote server
Sudo ssh -L 548:127.0.0.1:548 email@hidden
Type password for root then password for email@hidden

(if you now connect to afp://127.0.0.1:10548, you can mount the other
server's volume on the tibook's desktop


Here is my terminal session (I changed logins an host names)

[olivier:~] olivier% sudo ssh -L 10548:127.0.0.1:548 email@hidden
Password:
email@hidden's password:
Last login: Sat May 31 14:49:20 2003 from lns-th2-5f-81-5
Welcome to Darwin!
[xserve:~] root# ssh -L 548:127.0.0.1:548 email@hidden
email@hidden's password:
Last login: Sat May 31 14:51:30 2003 from acaen-202-2-1-3
Welcome to Darwin!
[sophie:~] root#

Then the two tunnels are on, I can mount sophie's volume !!! through xserve
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References: 
 >ssh tunneling (was firewall configuration) (From: Eric Saxby <email@hidden>)



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