openssh - how to confirm if it is running

[sabkuchindia]

Still googling/reading about openssh and decided to give it a try and wanted to be sure that my computer is safe while I am still reading/learning.


Installed openssh in Debian Testing -

- will ssh start upon boot up?
- how to disable ssh starting up upon boot up?
- how to confirm if ssh is already running?


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[svar]

hi,

You can check as follows,
1.) chkconfig --list (this will list all the service which are enable and disable)
2.) chkconfig service-name off (will disable the service at startup)
3.) service service-name status (will say whether the service is on or off)

[wheelnut]

Other methods to check is openssh is running:

# ps -ef | fgrep ssh | fgrep -v fgrep

that will check the process list to see if there is anything running with the letters ssh in it. Alternatively, and even more reliably, check to see if it is listening for incoming connections (assuming you are using the default port of 22), by:

# netstat -at | fgrep ssh | fgrep LISTEN

That should display one or even two entries depending whether you are listening using IPV6.

Hope that helps,

Martin