"Connection Reset By Peer" on ssh sessions

Python python at venix.com
Sat Feb 4 10:11:01 EST 2006


On Sat, 2006-02-04 at 09:36 -0500, Fred wrote:
> I've got an annoying problem with the new Verizon Fios service.
> 
> If I leave an ssh session open and sits idle for longer than 2-5
> minutes, it 
> is killed with a "Connection Reset by Peer" error message.
> 
I've seen this kind of behavior where there is a stateful, inspection
firewall processing packets, though never with a timeout this small.
When the firewall dropped the connection info from its state tables, any
subsequent packets would be mangled and unacceptable to the remote end
which would then close the connection - generating the Connection Reset
by Peer message at the local end.

I ran tcpdump at both endpoints to document what was happening.  The
firewall managers were unwilling to make any changes.

I do not know if you will be able to get Verizon to do anything to fix
the problem.  At least ssh has a keep-alive feature that should be
somewhat configurable.  Hopefully you can send a keep-alive packet every
2 minutes.

-- 
Lloyd Kvam
Venix Corp.
1 Court Street, Suite 378
Lebanon, NH 03766-1358

voice:  603-653-8139
fax:    320-210-3409
-- 
Lloyd Kvam
Venix Corp




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