SSH login takes forever

[Andreas Tausch]

Hi,

I have a weird problem running HP-UX OpenSSH 3.9 on a HP-UX 11.11 system.

On logging in via SSH2 from the one network anything works fine. Connecting from another network requests loginname at once but then it takes about 30 seconds for the password request to appear. Once being logged in to the system there are no more problems coming up.

Any ideas?

[Peter Godron · Accepted solution]

Andrea,
have tried ssh -w ?
And have you cheked your resolv.conf, nsswitch.conf and /etc/hosts files?

please see:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1021839
and
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=971375

[Jaime Bolanos Rojas.]

Andreas,

Make sure that your 3 resolution files are configured properly, /etc/resolv.conf, /etc/nsswitch.conf and /etc/hosts files.

Start from simple to more complicated, setup the /etc/hosts file with the ip's and names of both machines that are connecting, you should notice a different in speed.

Regards,

jaime.

[Steven E. Protter]

Shalom,

Try

ssh -vvv

See when the delay occurs.

I like the DNS resolv.conf idea.

tail -f /var/adm/syslog/syslog.log on the server and see what happens during connect.

Newer versions of OpenSSH often deal with performance issues: http://software.hp.com
Search for Secure Shell

SEP

[Andreas Tausch]

Hi guys,

thanks for your input. It turned out to be a crappy configured resolv.conf, as you all figured. Our DNS servers don´t transfer the reverse lookup zones for the network the client´s tried to connect from, thus the timeout for the reverse name lookup.

By the way, it had nothing to do with the OpenSSH release (3.91) which I updated to V4.30 to be sure about that.

[Andreas Tausch]

Thanks