not able to access remote via ssh .

dharmendrajet · 03-16-2011, 11:54 PM

hi ,

iam not able remote login , while yesterday i was able to login . when i do ssh my machine from other machine he asked for passord . after that it give erroe permisson denied . but i was able same password yesterday.. same issue was yesterday .

when i install fresh cent os 5.5 . after it work well till night. but next day morning . we are not able to remoe login .

plz help me

corp769 · 03-17-2011, 12:08 AM

Hello,

I can barely understand what you are trying to say. Please spell properly, and explain in more detail what your problem is. Thanks for understanding,

Josh

jschiwal · 03-17-2011, 12:21 AM

Please use capitalization and proper spelling. Your message is hard to read.

Try logging in again using "ssh -vv" for more debugging feedback at the client. Check for any log entries (messages & security) on the server as well.

For ssh here are some things you can check:

Check permissions of $HOME and $HOME/.ssh on your server. If you made them too permissive, ssh will fail. The permissions on the client might cause it to fail as well.
If you changed to using public key authentication, you need the client's public key appended to the server's $HOME/.ssh/authorized_keys file.
If you don't get a responce at all, check that /etc/hosts.deny or the firewall isn't blocking port 22.
On openSuSE 11.3, you needed to prepend "%h/" to the line giving the location of authorized_keys. I don't know if this is required for RHEL.
Check for AllowGroups, DenyGroups, AllowHosts, DenyHosts entries in /etc/ssh/sshd_config.

Since you do get a connection, you probably don't have a firewall issue.

Your service contract with Red Hat will give you access to Red Hat's assistance as well.