Missed in installation - ssh port open option

When I installed Opensuse, I forgot enabling ‘ssh port open’ option.
If I want to change the option, should I reinstall the entire OS?
Any help will welcome. Thanks in advance.

Welcome to openSUSE Forums Unclepetors. Are you just wanting to configure the firewall for SSH server access? That can be done via YaST…

YaST > Security and Users > Firewall > Allowed Services > Service to Allow, select ‘Secure Shell Server’ then ‘Next’ and ‘Finish’.

And for starting the SSH server now and on boot, use YaST > System > System Services Manager. Scroll down to SSH, select it and check both boxes below. Finish and off you do.

Thank you for your help. I will try it.

This will be a great help for me. Thanks.