SSH login takes very long time...sometimes
Kobi Shmueli
kobi at macron.co.il
Fri Dec 23 05:30:00 PST 2005
Michael A. Koerber wrote:
> I have three machines that have had 5.4 and 6.0 installed. Two of the
three machines have very
> well behaved "ssh". However, the machine (laptop) named OBOE does not.
>
> Specifically "ssh oboe" will (most of the time) hang for around one
minute before asking for a
> prompt. However, if I'm logged into OBOE and "ssh BSD" (one of the other
machines) a password is
> requested within a couple seconds. (I said most of the time, since on
occasion I can reboot OBOE
> and ssh will work just fine...hmmm.)
>
> I have looked through the /var/log files for clues and skimmed "man ssh"
for time out related
> stuff, but no luck.
>
> Where should I start looking for clues?
Try checking /etc/resolv.conf on oboe first, adding a static entry to
/etc/hosts of the remote ip/host should speed dns checks as well.
You can also run ssh in verbose mode (ssh -v oboe) or/and run sshd in debug
mode (sshd -d).
-Kobi.
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