View source for How to connect to server on strange port, or when you're behind a firewall

=Situation=

<pre>
cpuxxxx -> FW -> intermediateserver -> targetserver

22......-> 22 -> 22.................-> portnumber_on_targetserver
</pre>

=Connect=
On cpuxxxx:
 ssh -L portnumber_on_targetserver:targetserver:portnumber_on_targetserver username_on_intermediateserver@intermediateserver

'''Leave terminal open!'''

Then on cpuxxxx again:
 ssh -YC username_on_targetserver@localhost -p portnumber_on_targetserver

That's it!!

=Copy files=
from here tot server:
 scp -P portnumber_on_targetserver file user@localhost:/path/were/to/put/it/
from server to local:
 scp -P portnumber_on_targetserver user@localhost:/path/were/to/get/it/from/ .

=mount filesystem over ssh using sshfs=
 sshfs user@localhost:/data/videos/ mnt/ -p portnumber

=Rsync=
from server to localdisk:
 rsync -avz -e 'ssh -p PORTNUMBER' USER@localhost:/data/htdocs/motion/ /data/motion/

=Start Konversation from behind a firewall=
 ssh -L 6667:irc.freenode.org:6667 user@xs3.xs4all.nl
 konversation --server localhost

=Start Pidgin from home to wzs=
* in a terminal typ:
 ssh -L 8300:gwmsg.wonen.amsterdam.nl:8300 root@wzs
*leave terminal open
*start pidgin and fill in:
:server: localhost
:port: 8300

=reverse tunnel=
*From the machine at work, create a tunnel to your machine running ssh at home:

 randolf@workserver:~$ ssh -vvv randolf@myhomeserver -R 44455:localhost:22

This will forward the remote port 44455 from your home server to port 22 (or whichever port ssh is listening on) on your work machine.

*From home, check to see if anything is listening on 44455

 randolf@homeserver:~$ netstat -an | grep 44455
 tcp        0      0 127.0.0.1:44455         0.0.0.0:*               LISTEN 

*Next, to connect from home to your work machine, from your home server:

 randolf@homeserver:~$ ssh localhost -p 44455
 Password: ******

From there you should be connected to your work machine via your tunnel.