KeepAlive/ClientAliveInterval not working? Idle timeout.

[Tim Rice]

On Thu, 20 Oct 2005, Bryce Nesbitt (mailing list account) wrote:

> I have set /etc/ssh/sshd_config with:
>     KeepAlive yes
>     ClientAliveInterval 3
> 
> However, no KeepAlive type messages seem to be sent.  I've verified this 
> by looking at the network lights, which don't flicker every 3 seconds.
> 
> I am attempting to keep interactive ssh sessions alive longer.   If 
> don't type anything for about 2 minutes, the sessions close.  If I run a 
> "idle" script (which just prints to the screen every 30 seconds) the 
> sessions stay open.  Sessions to a different host stay open, so I don't 
> think it is a client problem.

This works on more current versions.
Usefull with sonicwall firewalls.
	# turn KeepAlive off and check the client every 5 minutes
	# fail after 6 tries (30 minutes)
	# should take care of intermintint LAN problems
	TCPKeepAlive no
	ClientAliveInterval 300
	ClientAliveCountMax 6

KeepAlive became TCPKeepAlive at about version 3.8

> 
>   My client is ttsh on Windows 2000
>   My server is OpenSSH 3.1p1 (from RedHat)
>   My host is RedHat Linux
> 
> Is this a bug?  Does anyone have advice on keeping interactive terminal 
> ssh sessions from timing out?
> 
> I have reviewed past posts to this list without luck.  This message 
> about sshd timeouts was the closest topic:
> http://marc.theaimsgroup.com/?l=openssh-unix-dev&m=103077014128847&w=2
> 

-- 
Tim Rice				Multitalents	(707) 887-1469
tim at multitalents.net