ssh problem

[rikona]

Saturday, June 16, 2012, 3:46:14 AM, Chris wrote:

> On Fri, Jun 15, 2012 at 05:49:17PM -0700, rikona wrote:
>> ssh stops working. I initiate the ssh contact in terminal; connects
>> reliably. I can ^C to stop it OK. I sometimes get a "broken pipe"
>> message, but can reconnect easily from the CLI.
>> 
>> The problem is sometimes [more often than not] ssh just quits
>> working - no message in terminal, and ^C will NOT do anything.
>> Terminal is not responding to keyboard input. If I close the
>> terminal window it warns me that something is still running and it
>> will stop if I close terminal. I usually just close the window and
>> start ssh again in a new terminal window.
>> 
>> What might be happening to ssh? What is the best way to diagnose
>> this? Best of all, is there a way to keep this from happening? It
>> has become a PITA. Before the last few updates, I do not recall
>> this happening. I run 10.04, updated.
>> 
> It sounds a bit like there's some sort of timeout in the connection.
> I used to suffer from this when I used ssh to connect through the
> firewall at work (with permission!). The firewall would drop the
> connection after several minutes of inactivity. Setting any/all of
> the keepalive settings in ssh didn't help, I finally resorted to a
> background script started from .profile which sent a NUL character
> every few minutes.

I'd be interested in that script...

> The symptoms of the firewall dropping the connection were exactly as
> you describe, connection stops working but no error message or other
> symptoms, just silence.

Did terminal stop responding to any input?

Thanks,                       

-- 

 rikona