From owner-freebsd-questions Mon Jan 25 17:18:47 1999 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA19106 for freebsd-questions-outgoing; Mon, 25 Jan 1999 17:18:47 -0800 (PST) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from caladan.tdx.co.uk (caladan.tdx.co.uk [195.188.177.4]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id RAA19094 for ; Mon, 25 Jan 1999 17:18:45 -0800 (PST) (envelope-from kpielorz@tdx.co.uk) Received: from tdx.co.uk (lorca-tx.tdx.co.uk [195.188.177.242]) by caladan.tdx.co.uk (8.9.2/8.9.2) with ESMTP id BAA36890; Tue, 26 Jan 1999 01:18:22 GMT Message-ID: <36AD17DE.561127B2@tdx.co.uk> Date: Tue, 26 Jan 1999 01:18:22 +0000 From: Karl Pielorz Organization: TDX - The Digital eXchange X-Mailer: Mozilla 4.5 [en] (WinNT; I) X-Accept-Language: en MIME-Version: 1.0 To: Eric Mandel CC: freebsd-questions@FreeBSD.ORG Subject: Re: Need some help with ipfw. References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Eric Mandel wrote: > > I'm sort of new to BSD, I read the page in the handbook about ipfw and i > sort of understood it, but the problem i have is this one person who > continues to dos my system, i think he is using smurf(not sure). But I > want to make a secure firewall from most dos attacks, i was wondering if > someone could help me in making this firewall. > > Eric The demo/config file '/etc/rc.firewall' lists some excellent books on the subject (and includes some simple setups) - that is if your running 2.2.5 onwards (roughly)... If someone is smurfing you - get in touch with the people/ISP their either surfing from, or (more probable) the people that their using as a reflector... Most ISP's take a dim view of either being the source of smurfing, or having their network act as a 'reflector' for smurf attacks... Either way you stand a good chance of getting rid of the guy (and stopping someone else from being a 'helping hand' in SmurfWars... -Kp To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message