SSH timeout logoff don't work!

[Conti Stefano <conti.s@email.it>]

If I put ClientAliveCountMax 1 with ClientAliveInterval 600 timeout is 1200 inmy Debian 11. I have try all combinations but at the moment nothing happen; session stay alive! There is somethng but i don't understand what keep alive the session...

--- Begin Message ---

• To: debian-user@lists.debian.org
• Subject: Re: SSH timeout logoff don't work!
• From: didier gaumet <didier.gaumet@gmail.com>
• Date: Tue, 21 Jun 2022 10:45:20 +0200
• Message-id: <[🔎] 3b846b35e36d41500e04cd72097f2f20a2ac808d.camel@gmail.com>
• In-reply-to: <[🔎] 5bd55fc03d212df18b682a68dd35bb0324c7df44.camel@email.it>
• References: <[🔎] 5bd55fc03d212df18b682a68dd35bb0324c7df44.camel@email.it>

Le mardi 21 juin 2022 à 10:05 +0200, Conti Stefano a écrit :
> Hello! In My Debian 11 SSH timeout logoff not work! I must put in
> .bashrc of my user: TMOUT=600 to loogut after 10 minutes. Work, of
> course, but close all bash terminal!
> 
> This is my sshd_config with info for timeout: 
> 
> TCPKeepAlive no
> ClientAliveInterval 600
> ClientAliveCountMax 0
>  
> Any suggest?

Disclaimer: I am not knowledgeable in ssh/sshd matters

If I am not wrong, from what I understand from sshd_config manpage:
https://manpages.debian.org/bullseye/openssh-server/sshd_config.5.en.html
this behavior is what it is supposed to be: 
DisconnectionDelay=ClientAliveInterval*ClientAliveCountMax
(times expressed in seconds)

ClientAliveCountMax set to 0 disables disconnection and is set by
default to 3.

For example, to have a 10mn disconnection delay, you could set:
- ClientAliveCountMax to 3 (default) and ClientAliveInterval to 200
- ClientAliveCountMax to 1 and ClientAliveInterval to 600
- ClientAliveCountMax to 10 and ClientAliveInterval to 60
...

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