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Date:      Fri, 23 Dec 2005 15:29:17 +0200
From:      Kobi Shmueli <kobi@macron.co.il>
To:        "Michael A. Koerber" <mak@ll.mit.edu>
Cc:        stable@freebsd.org, current@freebsd.org
Subject:   Re: SSH login takes very long time...sometimes
Message-ID:  <001301c607c4$e04e2540$80cea8c0@home1>
References:  <43ABF6E4.2090908@ll.mit.edu>

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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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