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Date:      Fri, 30 Jan 1998 14:40:45 +0000
From:      Karl Pielorz <kpielorz@tdx.co.uk>
To:        michael dorin <mike@chaski.com>
Cc:        questions@FreeBSD.ORG
Subject:   Re: why is telnet so slow....
Message-ID:  <34D1E66D.79A58BFA@tdx.co.uk>
References:  <199801300818.IAA13219@chaski.com>

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Sounds like the machines are using the DNS to reverse the ip address your
telnetting from...

This is a basic security check that some systems do - e.g. if I claim to be
from 192.168.100.23, and 192.168.100.23 resolves to 'happyhost@hunter.com',
but 'happyhost@hunter.com' when nslook'd up turns out to be '120.39.29.1' -
then I'm probably not who I claim to be...

The pause is while all the DNS activity is going on... Some systems will kick
you out if you fail this check, others will just log it as a 'warning'.

Check your IP address is reverse-resolvable, and that your hostname can be put
through a DNS lookup on both systems...

Regards,

Karl Pielorz

michael dorin wrote:
> 
> I have a network of 2 sun workstations, one linux box, two window's
> boxes, and one Freebsd box.
> 
> When I try and telnet between the systems it takes forever, but
> the session always comes up.  Whats going on?  What can I do
> to make it faster?
> 
> -Mike



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