From owner-freebsd-isp Tue Apr 22 15:44:35 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id PAA12438 for isp-outgoing; Tue, 22 Apr 1997 15:44:35 -0700 (PDT) Received: from gdi.uoregon.edu (gdi.uoregon.edu [128.223.170.30]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id PAA12433; Tue, 22 Apr 1997 15:44:33 -0700 (PDT) Received: from localhost (dwhite@localhost) by gdi.uoregon.edu (8.8.5/8.6.12) with SMTP id PAA24505; Tue, 22 Apr 1997 15:44:27 -0700 (PDT) Date: Tue, 22 Apr 1997 15:44:27 -0700 (PDT) From: Doug White X-Sender: dwhite@localhost Reply-To: Doug White To: Tim Tsai cc: questions@freebsd.org, isp@freebsd.org Subject: Re: Help interpreting this tcpdump log In-Reply-To: <19970421053941.63305@shell.futuresouth.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-isp@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Mon, 21 Apr 1997, Tim Tsai wrote: > I am enclosing a tcpdump session that demonstrate a problem we're > seeing. ts is a Livingston terminal server and mail is a FreeBSD 2.2.1R > machine. The problem is that "telnet mail 25" from the terminal server > will show the initial sendmail login banner, but nothing works after > that. It seems that this problem is only showing up if we go through > the terminal server. Any ideas? MTU is set to 1500 on both machines > and they're on the same ethernet segment. Have you tried disabling tcp_extensions in /etc/sysconfig? I didn't think the livingstons had this problem. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major