ClientAliveInterval is not closing the idle ssh connection

Asked Feb 20 '22 at 06:50

Active Feb 20 '22 at 06:50

Viewed 523 times

I have the task to close the idle ssh connection if they are idle for more than 5 minutes. I have tried setting these value on sshd_config

TCPKeepAlive no
ClientAliveInterval 300
ClientAliveCountMax 0

But nothing seems to work the idle remains active and does not get lost even after 5 minutes of idle time.

Then I came across this https://bbs.archlinux.org/viewtopic.php?id=254707 they guys says

These are not for user-idle circumstances, they are - as that man page excerpt notes - for unresponsive SSH clients. The client will be unresponsive if the client program has frozen or the connection has been broken. The client should not be unresponsive simply because the human user has stepped away from the keyboard: the ssh client will still receive packets sent from the server.

I can't even use TMOUT because there are ssh client scripts that do not run bash program.

How to achieve this

Openssh version OpenSSH_8.2p1 Ubuntu-4ubuntu0.4, OpenSSL 1.1.1f 31 Mar 2020

asked Feb 20 '22 at 06:50

Noobie

Did you restart or reload the SSHD service after changing the files? Just checking in case not! – shearn89 Feb 21 '22 at 08:38
@shearn89 Yes .. – Viren Feb 21 '22 at 09:03
Sorry, are you OP? How come different account? – shearn89 Feb 21 '22 at 09:11

ClientAliveInterval is not closing the idle ssh connection

0 Answers0