From owner-freebsd-hackers@FreeBSD.ORG Wed Jul 9 01:16:12 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F2B6D37B401 for ; Wed, 9 Jul 2003 01:16:11 -0700 (PDT) Received: from cicero0.cybercity.dk (cicero0.cybercity.dk [212.242.40.52]) by mx1.FreeBSD.org (Postfix) with ESMTP id 45ECC43F75 for ; Wed, 9 Jul 2003 01:16:11 -0700 (PDT) (envelope-from db@traceroute.dk) Received: from user1.cybercity.dk (fxp0.user1.ip.cybercity.dk [212.242.41.34]) by cicero0.cybercity.dk (Postfix) with ESMTP id 36E4C2912D; Wed, 9 Jul 2003 10:16:09 +0200 (CEST) Received: from main (port132.ds1-arsy.adsl.cybercity.dk [212.242.239.73]) by user1.cybercity.dk (Postfix) with SMTP id 60D4B68B62; Wed, 9 Jul 2003 10:16:08 +0200 (CEST) Date: Wed, 9 Jul 2003 10:24:33 +0200 From: Socketd To: Terry Lambert , hackers@freebsd.org Message-Id: <20030709102433.0d510abc.db@traceroute.dk> In-Reply-To: <3F0BAD5C.65895290@mindspring.com> References: <20030707012205.3103dfc8.db@traceroute.dk> <20030707153314.GA1695@webboy.soth.at> <20030707180252.44036c61.db@traceroute.dk> <3F0A9A1C.25E6EB35@mindspring.com> <20030708131339.16da151f.db@traceroute.dk> <3F0AA830.9A82CB37@mindspring.com> <20030708140012.0fd685c8.db@traceroute.dk> <3F0BAD5C.65895290@mindspring.com> X-Mailer: Sylpheed version 0.8.10claws (GTK+ 1.2.10; i386-portbld-freebsd4.8) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: 5 "Advanced" networking questions X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jul 2003 08:16:12 -0000 On Tue, 08 Jul 2003 22:51:24 -0700 Terry Lambert wrote: > > Hmm, why not just use a firewall? > > Because most firewalls, even commercial ones, don't block the > ICMP messages you appear to be interested in blocking. > > You appeared to want to turn your FreeBSD box into what's > normally called a "stealth" system: one that doesn't respond > at all to external probe attempts. So it looked like you > were trying to *write* a firewall, or at least find a set > of rules that would let your FreeBSD box act as a "stealth" > one. I am mainly trying to hide my firewall/gateway and logserver. Thank you for your reply, I'll go read a little :-) br socketd