Re: delay after ssh'ing into a server

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Bill Tangren wrote:
Mahesh Pokala wrote:
Check /etc/resolv.conf  for valid dns entries
Check /etc/nsswitch.conf  for valid entries.


I don't see anything unusual in them, and I haven't changed them. Also, they are the same as the same files on the other servers, and those servers don't have this problem. I've tried this from several different servers. I've also asked others to try, and they have the same problem.

try ssh -vv user@wherever to see where the hang is happening.

On the server try dig -x client.IP.add.ress to be sure reverse DNS works.

Mahesh

-----Original Message-----
From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Bill Tangren
Sent: Thursday, October 05, 2006 1:29 PM
To: General Red Hat Linux discussion list
Subject: delay after ssh'ing into a server

I am having an odd problem with one of my RHEL servers. When I issue the command to ssh into it:

$ ssh aa

there is a 30 second delay before I get the password prompt. I tried deleting the appropriate line in ~/.ssh/known-hosts and trying it again, but I still got a 30 second delay before I got this message:

The authenticity of host 'aa (10.1.5.93)' can't be established.
RSA key fingerprint is <a:long:hex:number>.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'aa,10.1.5.93' (RSA) to the list of known hosts.

This is what the log looks like during this time:

Oct 5 14:52:30 aa xinetd[3098]: START: ssh pid=23524 from=10.1.5.58 Oct 5 18:53:12 aa sshd[23567]: Accepted password for bjt from 10.1.5.58 port
32818 ssh2
Oct 5 14:53:12 aa sshd[23524]: Accepted password for bjt from 10.1.5.58 port
32818 ssh2

Notice the 42 second time delay. The first line appeared in the log just after I send the "ssh aa" command.

I must have done something to make the system delay after receiving the connection request, but I can't imagine what. Googling turned up nothing for me.

Any ideas?

Bill Tangren

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