Log not much help -- going to be a NetMon case: Original Client IP Client Agent Authenticated Client Service Server Name Referring Server Destination Host Name Transport MIME Type Object Source Source Proxy Destination Proxy Bidirectional Client Host Name Network Interface Raw IP Header Raw Payload GMT Log Time Source Port Processing Time Bytes Sent Bytes Received Result Code Cache Information Log Record Type Authentication Server Log Time Client IP Destination IP Destination Port Protocol URL Action Rule Client Username Filter Information Error Information HTTP Method HTTP Status Code Source Network Destination Network 0.0.0.0 Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; Zune 2.0; InfoPath.2; MS-RTC LM 8; .NET CLR 3.0.04506.648) Yes Proxy NEWCELESTIX webmail.keiba.co.uk TCP Internet - - - - - - 1/16/2009 1:59:59 PM 0 313 4253 360 0x2020000 Web Proxy Filter 1/16/2009 7:59:59 AM 192.168.1.70 88.208.248.10 80 http http://webmail.keiba.co.uk/ Failed Connection Attempt All Open anonymous Req ID: 0a8acd9a 0x400 GET 50 The request is not supported. Internal External ____________________________________________ TOM SHINDER | Sr. Consultant/Technical Writer 206.443.1117 | SHINDER@xxxxxxxxxxxxxxx 5701 Sixth Avenue South | Seattle, WA 98108 PROWESS | WWW.PROWESSCORP.COM <http://www.prowesscorp.com/> ____________________________________________ From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Steve Moffat Sent: Friday, January 16, 2009 7:14 AM To: ISAPros Mailing List Subject: RE: [isapros] Re: HTTP 2.0 Specification? No wurky here either. Explanation: There is a problem with the page you are trying to reach and it cannot be displayed. Try the following: * Refresh page: Search for the page again by clicking the Refresh button. The timeout may have occurred due to Internet congestion. * Check spelling: Check that you typed the Web page address correctly. The address may have been mistyped. * Access from a link: If there is a link to the page you are looking for, try accessing the page from that link. If you are still not able to view the requested page, try contacting your administrator or Helpdesk. Technical Information (for support personnel) * Error Code: 502 Proxy Error. The request is not supported. (50) * IP Address: 88.208.248.10 * Date: 1/16/2009 1:12:38 PM [GMT] * Server: inchindar.optimum.bm * Source: proxy From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Richard Hicks Sent: Friday, January 16, 2009 12:12 AM To: ISAPros Mailing List Subject: [isapros] Re: HTTP 2.0 Specification? http://webmail.keiba.co.uk/ Richard Hicks Senior Sales Engineer Celestix Networks, Inc. 48001 Fremont Blvd. Fremont, CA 94538 510.668.0700 x229 [Office] 949.330.3919 [Cel] rhicks@xxxxxxxxxxxx www.celestix.com <http://www.celestix.com/> tmgblog.richardhicks.com <http://tmgblog.richardhicks.com/> - Check out my new blog! From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Thomas W Shinder Sent: Thursday, January 15, 2009 5:37 PM To: isapros@xxxxxxxxxxxxx Subject: [isapros] Re: HTTP 2.0 Specification? What's the site? ____________________________________________ TOM SHINDER | Sr. Consultant/Technical Writer 206.443.1117 | SHINDER@xxxxxxxxxxxxxxx 5701 Sixth Avenue South | Seattle, WA 98108 PROWESS | WWW.PROWESSCORP.COM <http://www.prowesscorp.com/> ____________________________________________ From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Richard Hicks Sent: Thursday, January 15, 2009 6:38 PM To: isapros@xxxxxxxxxxxxx Subject: [isapros] HTTP 2.0 Specification? I realize I might be showing my ignorance here, but is there an HTTP/2.0 specification? I have a customer attempting to reach a web site and ISA is responding with a 502 error indicating that the request is not supported. My Cisco ASA passes the traffic though (not performing any application layer inspection!) and a network trace shows that the remote web server is responding with an HTTP/2.0 OK. Since I can't seem to find anything on the Internet regarding an HTTP/2.0 specification, I have to assume the ISA firewall is doing its job and rejecting this non-RFC communication, correct? Thanks! Richard Hicks Senior Sales Engineer Celestix Networks, Inc. 48001 Fremont Blvd. Fremont, CA 94538 510.668.0700 x229 [Office] 949.330.3919 [Cel] rhicks@xxxxxxxxxxxx www.celestix.com <http://www.celestix.com/> tmgblog.richardhicks.com <http://tmgblog.richardhicks.com/> - Check out my new blog!