From owner-freebsd-net Thu Feb 28 2:28:33 2002 Delivered-To: freebsd-net@freebsd.org Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by hub.freebsd.org (Postfix) with ESMTP id 20D8337B402 for ; Thu, 28 Feb 2002 02:28:31 -0800 (PST) Received: by elvis.mu.org (Postfix, from userid 1192) id EDEE0AE27F; Thu, 28 Feb 2002 02:28:30 -0800 (PST) Date: Thu, 28 Feb 2002 02:28:30 -0800 From: Alfred Perlstein To: net@freebsd.org Subject: ipfw+nfs kills both client and server Message-ID: <20020228102830.GA73010@elvis.mu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.27i Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org If anyone is interested, take this scenario: NFS client and server set up client is doing this: tar cf - /path/to/nfs/mount | tar -xvf - idiot sysadmin (me) does this on client: kldload ipfw Now since the default ruleset is to deny everything, the client locks up spewing 'nfsd send error 13'. Now give it two or three shots and you may get the server to lock up as well! (seems to run out of mbufs) -- -Alfred Perlstein [alfred@freebsd.org] 'Instead of asking why a piece of software is using "1970s technology," start asking why software is ignoring 30 years of accumulated wisdom.' Tax deductible donations for FreeBSD: http://www.freebsdfoundation.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message