Re: [PLUG] some bash help

["Gavin W. Burris" <bug@wharton.upenn.edu>]

Hi, Carl.

You can do an ssh proxy through an intermediate host.

Put something like this in your ~/.ssh/config file.

Host server-a
       Hostname server-a.carl.net
       User carl
       Port 22
       MACs umac-64@openssh.com
       Ciphers arcfour,blowfish-cbc
Host server-b
       ProxyCommand ssh -W %h:%p server-a
       HostName 192.168.1.123


Then you can just:  ssh server-b

Cheers.

On Wed 10/28/15 12:46PM EDT, Carl Johnson wrote:
> I have a server that I need to use as a transparent jump box to another
> network. What I'd like to do is have a "serveradmin" user be able to SSH
> into "serverA" and automatically be SSH'ed into another server, "serverB".
> If this second ssh session to serverB is killed (i.e. ctrl+c) or dies for
> whatever reason I'd like the original ssh session to serverA to collapse
> too.
> 
> How can I do this? Is it even possible? Do I have to do some sort of if
> while true magic in .bashrc or what? Maybe the first server has to look for
> exit codes other than "0"?
> 
> I've gotten the easy part done already. I can SSH in as serveradmin but
> while at the login prompt of the second server if I ctrl+c I get dumped
> back into a bash prompt on the first server. What I'd like to do is prevent
> this recursion if possible.

> ___________________________________________________________________________
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-- 
Gavin W. Burris
Senior Project Leader for Research Computing
The Wharton School
University of Pennsylvania
___________________________________________________________________________
Philadelphia Linux Users Group         --        http://www.phillylinux.org
Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
General Discussion  --   http://lists.phillylinux.org/mailman/listinfo/plug