>Could you please test with "ssh -c aes128-ctr" ? This is not a valid command.
After some workaround, I found that the ssh service in system->administration->services->ssh is different from running the command "service sshd start". What I did was to first enable system->administration->services->ssh (the red icon turns to green) and then I ran "service sshd start". The output was not a complain that "service is already started". Now I am able to ssh without problem. Still I am eager to find the problem because I don't think that is the only remedy. Regards, Mahmood ________________________________ From: Fumihito Yoshida <[email protected]> To: Mahmood Naderan <[email protected]> Cc: "[email protected]" <[email protected]> Sent: Wednesday, February 27, 2013 10:48 AM Subject: Re: ssh from SL to Ubuntu works but doesn't work from Ubuntu to SL Hi, > I have insatlled a very fresh SL6.3 on a node. The problem is from SL6.3 I > can ssh to a nother node (ubuntu) but can not ssh from ubuntuu to SL. Could you please test with "ssh -c aes128-ctr" ? It seems like https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=821079
