From owner-freebsd-questions Wed Feb 14 9: 5:32 2001 Delivered-To: freebsd-questions@freebsd.org Received: from be-well.ilk.org (lowellg.ne.mediaone.net [24.147.184.128]) by hub.freebsd.org (Postfix) with ESMTP id 5D75837B401 for ; Wed, 14 Feb 2001 09:05:30 -0800 (PST) Received: (from lowell@localhost) by be-well.ilk.org (8.11.2/8.11.2) id f1EH5Tt00792; Wed, 14 Feb 2001 12:05:29 -0500 (EST) (envelope-from lowell) To: freebsd-questions@freebsd.org Subject: Re: Firewall rules block P:2 and P:103 References: <20010214102008.A2113@junior.kasby> From: Lowell Gilbert Date: 14 Feb 2001 12:05:29 -0500 In-Reply-To: joes@joescanner.com's message of "14 Feb 2001 10:29:57 +0100" Message-ID: <443ddhqjom.fsf@lowellg.ne.mediaone.net> Lines: 15 X-Mailer: Gnus v5.7/Emacs 20.7 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG joes@joescanner.com (Joseph Stein) writes: > > Can anybody explain me what P:103 and P:2 mean? Why my ISP keep sending me > > these packets? > > according to /etc/protocols, P:103 is "Protocol independent Multicast" and > P:2 is "Internet Group Management Protocol". > > > Should I allow or deny these packets? > > It's probably safe to block them, but i'm no expert. They're ways of determining membership in multicast groups. If the machine isn't doing multicast, blocking them is fine; if it is, then somebody probably already noticed that multicast didn't work. :-) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message