From owner-freebsd-current Tue Apr 9 08:24:51 1996 Return-Path: owner-current Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id IAA18503 for current-outgoing; Tue, 9 Apr 1996 08:24:51 -0700 (PDT) Received: from palmer.demon.co.uk (palmer.demon.co.uk [158.152.50.150]) by freefall.freebsd.org (8.7.3/8.7.3) with ESMTP id IAA18476 for ; Tue, 9 Apr 1996 08:24:39 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by palmer.demon.co.uk (sendmail/PALMER-1) with SMTP id PAA08441 ; Tue, 9 Apr 1996 15:40:08 +0100 (BST) To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) cc: freebsd-current@FreeBSD.ORG (FreeBSD-current users) From: "Gary Palmer" Subject: Re: routed delete my PPP default: how to fight it? In-reply-to: Your message of "Tue, 09 Apr 1996 09:36:39 +0200." <199604090736.JAA08067@uriah.heep.sax.de> Date: Tue, 09 Apr 1996 15:40:08 +0100 Message-ID: <8439.829060808@palmer.demon.co.uk> Sender: owner-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk J Wunsch wrote in message ID <199604090736.JAA08067@uriah.heep.sax.de>: > That's ``auth''. I've always wondered at my machine at work (where i > tcpdump all traffic that's going through the Internet router) who is > connecting to this port. It's also somehow related to sendmail. > Does anybody know more about ``auth''? Sendmail tries connecting to the auth port to find out the UID / username of the person doing the connection in a vain attempt to catch forged e-mails. I say vain, as the majority of systems on the 'net still don't run identd, and hence most people sending faked e-mails are not inconvenienced in any way by this. Gary