From owner-freebsd-net@FreeBSD.ORG Fri May 30 06:34:02 2003 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8054737B401 for ; Fri, 30 May 2003 06:34:02 -0700 (PDT) Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id C225643F93 for ; Fri, 30 May 2003 06:34:01 -0700 (PDT) (envelope-from gallatin@cs.duke.edu) Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu [152.3.145.30]) by duke.cs.duke.edu (8.12.9/8.12.9) with ESMTP id h4UDY129002540 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO); Fri, 30 May 2003 09:34:01 -0400 (EDT) Received: (from gallatin@localhost) by grasshopper.cs.duke.edu (8.11.6/8.9.1) id h4UDXut37373; Fri, 30 May 2003 09:33:56 -0400 (EDT) (envelope-from gallatin@cs.duke.edu) From: Andrew Gallatin MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16087.24004.208831.221102@grasshopper.cs.duke.edu> Date: Fri, 30 May 2003 09:33:56 -0400 (EDT) To: "Simon L. Nielsen" In-Reply-To: <20030530133052.GC414@nitro.dk> References: <16087.23499.422415.378026@grasshopper.cs.duke.edu> <20030530133052.GC414@nitro.dk> X-Mailer: VM 6.75 under 21.1 (patch 12) "Channel Islands" XEmacs Lucid cc: freebsd-net@freebsd.org Subject: Re: limiting connections per IP w/FreeBSD ftpd? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 May 2003 13:34:02 -0000 Simon L. Nielsen writes: > On 2003.05.30 09:25:31 -0400, Andrew Gallatin wrote: > > > > At my company, some bonehead (not sure if it was maliciousness or just > > a stupid customer), opened 60 simultaneous connections to our ftp > > server and totally swamped our T1. This is the second or third time > > this has happened recently. > > How about just restricting the bandwidth usage with ipfw/dummynet ? > Our firewall is elsewhere, and I don't admin it. As for adding it to the server itself, its an alpha, and I don't think dummnet/ipfw are production quality on alpha... Drew