Run sshd and ssh with the -vv option and see what happens. -vv is very
verbose logging.
I have a problem like this on one server, but it's actually an iptables
misconfiguration - something about limiting the output bytes per second.
George Toft, CISSP
Bryan O'Neal wrote:
> So I have two nearly identical servers that lock out my ssh connection.
> I will connect and be working fine and then nothing, total lock up.
> Usually it is rite after I hit enter on a command and the output has
> been displayed. After which I am greeted with a prompt but I have no
> controlee over the blinking cursor. Any thought about how I can go
> about figuring what is going wrong? It seems totally random and I have
> six SSh sessions at once to my go daddy server and only one will drop
> out on my at a time. The secure log seems to indicate that is a pam
> issue, but I would expect not to be able to login if it was a pam
> issue. What do you all think
>
> Here is a clip from the secure log
>
> Aug 5 13:15:12 myserver sshd[4280]: Accepted password for user_bryan
> from 66.193.205.160 port 51738 ssh2
>
> Aug 5 13:15:12 myserver sshd[4280]: pam_unix(sshd:session): session
> opened for user user_bryan by (uid=0)
>
> Aug 5 13:15:23 myserver su: pam_unix(su-l:session): session opened for
> user root by user_bryan(uid=506)
>
> Aug 5 13:16:44 myserver sshd[4454]: Accepted password for user_bryan
> from 66.193.205.166 port 51739 ssh2
>
> Aug 5 13:16:44 myserver sshd[4454]: pam_unix(sshd:session): session
> opened for user user_bryan by (uid=0)
>
> Aug 5 13:16:54 myserver su: pam_unix(su-l:session): session opened for
> user root by user_bryan(uid=506)
>
> Aug 5 13:17:57 myserver sshd[1406]: pam_unix(sshd:session): session
> closed for user user_bryan
>
> Aug 5 13:17:57 myserver su: pam_unix(su-l:session): session closed for
> user root
>
> Aug 5 13:24:46 myserver sshd[4454]: pam_unix(sshd:session): session
> closed for user user_bryan
>
> Aug 5 13:24:46 myserver su: pam_unix(su-l:session): session closed for
> user root
>
> Aug 5 13:35:09 myserver sshd[5418]: Accepted password for user_bryan
> from 66.193.205.166 port 38322 ssh2
>
> Aug 5 13:35:09 myserver sshd[5418]: pam_unix(sshd:session): session
> opened for user user_bryan by (uid=0)
>
> Aug 5 13:35:17 myserver su: pam_unix(su-l:session): session opened for
> user root by user_bryan(uid=506)
>
>
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