From owner-freebsd-questions@FreeBSD.ORG Thu Jul 14 12:37:58 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7D811106566C for ; Thu, 14 Jul 2011 12:37:58 +0000 (UTC) (envelope-from josh@monarci.com) Received: from sam.nabble.com (sam.nabble.com [216.139.236.26]) by mx1.freebsd.org (Postfix) with ESMTP id 5DCA88FC15 for ; Thu, 14 Jul 2011 12:37:58 +0000 (UTC) Received: from [192.168.236.26] (helo=sam.nabble.com) by sam.nabble.com with esmtp (Exim 4.72) (envelope-from ) id 1QhKry-0000MB-8M for freebsd-questions@freebsd.org; Thu, 14 Jul 2011 05:18:18 -0700 Date: Thu, 14 Jul 2011 05:18:18 -0700 (PDT) From: monarci To: freebsd-questions@freebsd.org Message-ID: <1310645898251-4586448.post@n5.nabble.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Recurring ICMP Bad Checksum Warning X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Jul 2011 12:37:58 -0000 I am currently running a company's FreeBSD web server and I am constantly receiving the ICMP Bad Checksum warning. It tells me that the severity is low, but I've read that it may be best to block such traffic. This advice comes from http://www.fortiguard.com/encyclopedia/vulnerability/icmp.bad.checksum.html My question is should I try to block this traffic, and if so, what is the best way? This is my first time managing a UNIX-based server and am really loving it, but still have a lot to learn. Thanks in advance. -- View this message in context: http://freebsd.1045724.n5.nabble.com/Recurring-ICMP-Bad-Checksum-Warning-tp4586448p4586448.html Sent from the freebsd-questions mailing list archive at Nabble.com.