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Article #101

poppassd port read-only from windows???

#101
From: Donovan Baarda
Date: Mon, 05 May 1997 00:00
46 lines
2656 bytes

G'day all,

I've got a wierd problem with poppassd from windows machines. I'm running
Debian 1.2 with the poppassd .deb installed.

When I try and change passwords using Eudora, it times out with error
messages. So I tried telnet to port 106 (used by poppassd according to
/etc/services and /etc/inetd.conf), and I got different things depending
on what OS I was running.

I always "see" the poppassd prompt come up, and from a linux machine, I 
can type responces and see what I type echoed back. But from windows,
anything I type seems to go nowhere. It's like windows treats port 106 on
my linux machine as read-only. There is also a subtle difference between
the poppassd prompt from windows and from linux. It appears that windows
sucks up or misses the first character sent.

From linux, I get;
200 minkirri poppassd v1.2 hello, who are you?

From windows, I get;
00 minkirri poppassd v1.2 hello, who are you?

When using linux, I have tried from localhost, and from another machine
over ethernet. Both worked fine.

When using windows, I've tried from a dialup connection, and over
ethernet (the same machine and IP address as used for linux ethernet 
test). Neither worked, and both showed the same symptoms.

I've been using teraterm and win3.11 with TCP32B stack over ethernet for
the win-ethernet test, and win3.11 with Trumpet for the dialup-win test.
Everything else works fine for any of the configurations tried, only
poppassd from windows is broken.

I can't understand why port 106 would be "read-only" from a machine 
running windows, and yet work fine from the same machine (and ip address) 
running linux. I didn't think you could even make a port "read-only". At
first I thought it might be the TCP32 stack that was the culprit, but the
behavior is the same using Trumpet.

Any clues anyone?

ABO
Technical Details
Message-ID: <5kjos3$ebc$1@minkirri.apana.org.au>
Path: arc1-ca.pugleaf.net!unknown!not-for-mail

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From: abo@minkirri.apana.org.au (Donovan Baarda)
Subject: poppassd port read-only from windows???
Date: 1997/05/05
Message-ID: <5kjos3$ebc$1@minkirri.apana.org.au>
X-Deja-AN: 239410094
X-Server-Date: 5 May 1997 04:49:07 GMT
Organization: Minkirri Internet Access
Keywords: poppassd, windows, Debian
Newsgroups: comp.os.linux.networking,linux.debian.user,apana.tech.ip,apana.lists.os.linux.net