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Date:      Fri, 23 Dec 2005 13:21:52 +0000
From:      Joao Barros <joao.barros@gmail.com>
To:        "Michael A. Koerber" <mak@ll.mit.edu>
Cc:        stable@freebsd.org
Subject:   Re: SSH login takes very long time...sometimes
Message-ID:  <70e8236f0512230521l2feb988bjb6d4e8a2e5895171@mail.gmail.com>
In-Reply-To: <43ABF6E4.2090908@ll.mit.edu>
References:  <43ABF6E4.2090908@ll.mit.edu>

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On 12/23/05, Michael A. Koerber <mak@ll.mit.edu> wrote:
> All,
>
>   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 min=
ute 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 oc=
casion 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?
>

Most probably it's a reverse dns issue.
You can either check your dns/hosts setup or tcpdump the traffic when
you try to login a machine.

--
Joao Barros



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