From owner-freebsd-security Tue Jul 17 10:26: 4 2001 Delivered-To: freebsd-security@freebsd.org Received: from mx6.port.ru (mx6.port.ru [194.67.23.42]) by hub.freebsd.org (Postfix) with ESMTP id 01FF037B403 for ; Tue, 17 Jul 2001 10:25:40 -0700 (PDT) (envelope-from mnvhome@mail.ru) Received: from f4.int ([10.0.0.51] helo=f4.mail.ru) by mx6.port.ru with esmtp (Exim 3.14 #1) id 15MYbJ-0009hC-00 for security@freebsd.org; Tue, 17 Jul 2001 21:25:37 +0400 Received: from mail by f4.mail.ru with local (Exim 3.14 #1) id 15MYbJ-000P1q-00 for security@freebsd.org; Tue, 17 Jul 2001 21:25:37 +0400 Received: from [212.35.160.177] by koi.mail.port.ru with HTTP; Tue, 17 Jul 2001 17:25:37 +0000 (GMT) From: "Nick Maschenko" To: security@freebsd.org Subject: Fw: Re: A question about FreeBSD security Mime-Version: 1.0 X-Mailer: mPOP Web-Mail 2.19 X-Originating-IP: unknown via proxy [212.35.160.177] Reply-To: "Nick Maschenko" Content-Type: text/plain; charset=koi8-r Content-Transfer-Encoding: 8bit Message-Id: Date: Tue, 17 Jul 2001 21:25:37 +0400 Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org -----Original Message----- From: Kris Kennaway To: Nick Maschenko Date: Tue, 17 Jul 2001 09:45:04 -0700 Subject: Re: A question about FreeBSD security > Ask on security@freebsd.org > > On Tue, Jul 17, 2001 at 03:38:16PM +0400, Nick Maschenko wrote: > > Hello Kris. > > Sorry if my question is too stupid. :-) > > If it is possible for you, would you like to advice me following: > > 1) some URLs about packet filtering in FreeBSD (ipfw), > > examples of good ipfw firewalls are preffered. > > 2) does FreeBSD kernel realize defence against some DoS > > attacks like smurf, broadcast, some types of > > flooding? > > I know and i use Linux 2.4.x branch with iptables, which can prevent some DoS attacks by using it's built-in mechanism. Does FreeBSD do somethging like this? For example, i saw how "she" :-) rejects > > a burst of RST/ACK packets while NMap scanning (stealth scan). If you do not want to answer in details, please advice me some URL(s) where i can read about this myself. > > Best regards. Nick. > > > > --- > > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message