From owner-freebsd-questions@FreeBSD.ORG Fri Jun 20 22:34:39 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CD63E37B401 for ; Fri, 20 Jun 2003 22:34:39 -0700 (PDT) Received: from cwe.compwest.com.au (compwest.com.au [202.72.147.44]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0147C43FA3 for ; Fri, 20 Jun 2003 22:34:38 -0700 (PDT) (envelope-from paul@bdug.org.au) Received: from ant.bdug.org.au (ant.parkview.compwest.com.au [202.72.147.43]) by cwe.compwest.com.au (8.12.6/8.11.6) with ESMTP id h5L5adKn001145 for ; Sat, 21 Jun 2003 13:36:40 +0800 (WST) (envelope-from paul@bdug.org.au) Received: from wks (wks.bdug.org.au [192.168.0.2]) by ant.bdug.org.au (8.12.9/8.12.6) with SMTP id h5L5YUfe013962 for ; Sat, 21 Jun 2003 13:34:32 +0800 (WST) (envelope-from paul@bdug.org.au) From: "Paul Hamilton" To: "Freebsd-Questions" Date: Sat, 21 Jun 2003 13:34:17 +0800 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Importance: Normal Subject: Transparent Proxy going astray X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 Jun 2003 05:34:40 -0000 Hi all, I have watched/lurked on this list for sometime now, and see a Transparent Proxy question every now or then. None of them have answered my problem. I give it a bash every now and then to see if I will trip over the answer. It hasn't worked, so I will try this list again. I run FreeBSD 4.8 on the gateway, Squid Cache: Version 2.4.STABLE4 Squid.conf has the required lines: http_port 8080 httpd_accel_port 80 httpd_accel_host virtual httpd_accel_with_proxy on httpd_accel_uses_host_header on and the required ipfw2 firewall rules: 00050 271 27520 allow tcp from 192.168.0.10 to any 00060 3 144 fwd 127.0.0.1,8080 tcp from any to any dst-port 80 Interestingly enough when watching the ip traffic on the gateway, I see this on my inside NIC: 08:27:18.735861 192.168.0.2.3276 > 203.10.1.17.53: 1093+ A? www.google.com.au. (35) 08:27:18.922217 203.10.1.17.53 > 192.168.0.2.3276: 1093 2/4/4 CNAME[|domain] 08:27:18.923667 192.168.0.2.3277 > 216.239.39.99.80: S 813553086:813553086(0) win 16384 (DF) 08:27:18.923722 216.239.39.99.80 > 192.168.0.2.3277: R 0:0(0) ack 813553087 win 0 08:27:19.397657 192.168.0.2.3277 > 216.239.39.99.80: S 813553086:813553086(0) win 16384 (DF) 08:27:19.397697 216.239.39.99.80 > 192.168.0.2.3277: R 0:0(0) ack 1 win 0 08:27:19.906095 192.168.0.2.3277 > 216.239.39.99.80: S 813553086:813553086(0) win 16384 (DF) 08:27:19.906153 216.239.39.99.80 > 192.168.0.2.3277: R 0:0(0) ack 1 win 0 and this on my outside NIC: 08:27:18.736970 202.72.147.43.3276 > 203.10.1.17.53: 1093+ A? www.google.com.au. (35) 08:27:18.922026 203.10.1.17.53 > 202.72.147.43.3276: 1093 2/4/4 CNAME www.google.com., (215) The cache_access.log doesn't show any traffic, yet (something) is pretending to be the google website, as there is a reply from 216.239.39.99.80. I have tried to run tcpdump -ni lo0 but there isn't any traffic. Should I be able to see traffic on lo0? Any thoughts on what I am missing? Cheers, Paul Hamilton