Originally Posted by visu_kvg
Change "UsePAM yes" to "UsePAM no" and try. If it works then we can tweak PAM config to allow your operations.
Make sure you have access to the consoles of the servers you are working on. If any thing goes wrong and if you cannot connect to the remote servers via ssh you revert back the changes via console.
Done that. "UsePAM no" but the problem persists. (network has been restarted)
p.s. I have full access to the server.