*BSD News Article 46933


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From: jbrann@panix.com (John Brann)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: TCP/IP problem - help, please
Date: 15 Jul 1995 14:52:36 -0400
Organization: PANIX Public Access Internet and Unix, NYC
Lines: 41
Message-ID: <3u92pk$29l@panix2.panix.com>
NNTP-Posting-Host: panix2.panix.com
Keywords: tcpdump

Hi,

Some weeks ago I posted a question about an apparently trivial problem I
was having with Netscape.  The trouble was (and is) that, although Netscape
appeared to be working fine, I couldn't access 'www.freebsd.org' - which
is rather annoying. It's particularly annoying because I can dial up, to the
same connection that my FreeBSD host uses, with a DOS/WINDOWS machine running
Chameleon, and have no trouble at all reaching the FreeBSD web pages.  In fact
that is what I do when I want to look something up. 

The responses I received at the time suggested the usual stuff about checking
that I can ping the host, look at traceroute, etc.  All of that worked fine.
In fact, the symptoms are more subtle.  I have no problem pinging the host
'www.freebsd.org' or 'freefall.cdrom.com' to give it its 'real' name.  When
I request the freebsd home page through Netscape, it gives the progress 
message 'Connect: Host contacted.  Waiting for reply...' almost immediately.
After that, nothing happens until a timeout when I get a popup telling me
that the connection was reset by the remote host.

I have spent some time investigating this problem.  I have used SLIP and PPP
connections (using both 'pppd' and 'ppp').  I have used 3 different web 
browsers (Netscape, Chimera and tkWWW) and the results are always identical.

I have come to the conclusion that something deeper is going on here...

In order to look more closely at this problem I have built the bpf device into
my kernel, in order to run 'tcpdump'.  Unfortunately, I know precious little
about tcp/ip, and would appreciate help from a friendly network hacker who 
could tell me what's going on.

Sorry to be so long winded, but this has been bugging me for 2 months now, and
is the only blot in my experience of FreeBSD.

Thanks, in advance,

John

--
  "If I had all the money I've spent on drink, I'd spend it on drink."
                                          Sir Henry Rawlinson.
John Brann  --  jbrann@panix.com  jbrann@newparadigm.com