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To: rewt@i-Plus.net
Cc: questions@freebsd.org
Subject: Re: weird delays in network connections 
Date: Sun, 16 Feb 1997 16:20:08 -0500
From: Bakul Shah <bakul@torrentnet.com>
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> This is getting kinda irritating, and I'm wondering if it's a bug, a 
> feature, or my own stupidity...
> 
> Right now, I'm sitting on an NT box, dialed into my terminal 
> server at work, and I'm able to telnet to any of three different 
> 2.2-GAMMA boxes, and get connected and logged in immediately.
> 
> Between 2 of these machines (both on the lan at work), I'm able to 
> connect immediately.  But, both ftp and telnet to the 3rd machine (10 
> hops away), will connect, but never give a login prompt.  It just 
> hangs until the connection times out or I close it manually.  
> 
> Other connections appear to be going fine, I can get a solid 
> connection with all 3 FreeBSD boxes to/from a SUN box that's also 
> about 10 hops away.
> 
> Has anyone else seen a problem like this?  Any suggestions would be 
> greatly appreciated.

Telnetd and ftpd do a reverse name lookup.  If the 3rd machines
can't resolve your NT box'es address to a name, the same symptom
will show up.

If you can log into the 3rd machine, do `nslookup <NT-box-ip-address>'
and see if it can resolve the address.  If it can't, that is most
likely your problem.  You can fix it by either adding a PTR
record to your named database or an entry in /etc/hosts and making
sure /etc/host.conf says first check the hosts file.