From owner-freebsd-ipfw Wed Apr 19 16:37:38 2000 Delivered-To: freebsd-ipfw@freebsd.org Received: from ns.itga.com.au (ns.itga.com.au [202.53.40.210]) by hub.freebsd.org (Postfix) with ESMTP id 7DCE237B857 for ; Wed, 19 Apr 2000 16:37:31 -0700 (PDT) (envelope-from gnb@itga.com.au) Received: from lightning.itga.com.au (lightning.itga.com.au [192.168.71.20]) by ns.itga.com.au (8.9.3/8.9.3) with ESMTP id JAA18572; Thu, 20 Apr 2000 09:37:27 +1000 (EST) (envelope-from gnb@itga.com.au) Received: from itga.com.au (lightning.itga.com.au [192.168.71.20]) by lightning.itga.com.au (8.9.3/8.9.3) with ESMTP id JAA25250; Thu, 20 Apr 2000 09:37:25 +1000 (EST) Message-Id: <200004192337.JAA25250@lightning.itga.com.au> X-Mailer: exmh version 2.0.1 12/23/97 From: Gregory Bond To: Olaf Hoyer Cc: freebsd-ipfw@FreeBSD.ORG Subject: Re: Pinging Firewall In-reply-to: Your message of Wed, 19 Apr 2000 15:55:24 +0200. Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 20 Apr 2000 09:37:25 +1000 Sender: owner-freebsd-ipfw@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > Question: In which ways does a firewall handles pings? It is part of the low-level networking code in the kernel. > And, more important, in which phase of the TCP/IP receiving process of the > ping may it be blocked? Ping has nothing to do with TCP. Ping uses ICMP packets. You can block pings using the appropriate rules in ipfw. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ipfw" in the body of the message