[PATCH] [shared] sshd_set_idle_timeout - when doing the check be sure to check also the lower bound of ClientAliveInterval value.

Shawn Wells shawn at redhat.com
Wed May 14 21:06:40 UTC 2014

On 5/14/14, 4:37 PM, Trevor Vaughan wrote:
> Ok, I realize that this went through a while ago but has anyone 
> actually lived with this setting enabled?
> I've got a LOT of unhappy users that start to VI a file, walk away for 
> a while (with their local screen locked) and come back to find their 
> sessions dumped all over the floor.
> The default appears to be 5 minutes across the board which I find WAY 
> too short since I might be looking at a man page in two windows for 
> that amount of time or more.
> I would like to propose that the defaults be changed to something more 
> sensible like 2, 4, or 8 hours. (Heck, meetings can go on for more 
> than 2 hours sometimes)
> Thanks,

The default value is 5 minutes:
> <Value id="sshd_idle_timeout_value" type="number"
> operator="equals" interactive="0">
> <title>SSH session Idle time</title>
> <description>Specify duration of allowed idle time.</description>
> <value selector="">300</value>
> <value selector="5_minutes">300</value>
> <value selector="10_minutes">600</value>
> <value selector="15_minutes">900</value>
> </Value>

STIG value is 15 minutes:
> $ grep -rin sshd_idle_timeout_value profiles/
> profiles/stig-rhel6-server-upstream.xml:114:<refine-value 
> idref="sshd_idle_timeout_value" selector="15_minutes"/>
> profiles/rht-ccp.xml:9:<refine-value idref="sshd_idle_timeout_value" 
> selector="5_minutes"/>
> profiles/common.xml:299:<refine-value idref="sshd_idle_timeout_value" 
> selector="5_minutes"/>

Interestingly, the CS2 profile doesn't refine the 
sshd_idle_timeout_value, thus inheriting the 5 minute constraint....

/me eyeballs dave smith to see if this was an oversight in the CS2 profile

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