502 Proxy Error. The Request Is Not Supported. 50 Isa
clients behind ISA Server 2006 ★★★★★★★★★★★★★★★ Ori Yosefi - MSFTMay 24, 20103 0 0 0 Consider a scenario where users who are part of the internal network of the ISA server and have configured their machines as web proxy clients. When those users are trying to go to certain websites they get error "502 proxy error, the request is not supported (50)" message and they are not able to view the page. Data collection to resolve the issue In order to troubleshoot this type of issue, we need to run ISA data packager in repro mode using the Web Proxy and Web Publishing template. The goal is to gather data while the client workstation is having this problem. Data analysis In the ISA Logs collected with ISA data packager we see failed connection attempt with result code as 50 as highlighted below (copying only the most relevant part of the log with action and result code). Failed www.contoso.com GET 50 http://www.contoso.com/abc/xyz.html http Domain\user1 In the network traces taken on the external NIC of the ISA server we can see that the http get request is going out as follows with all the headers and their corresponding values in the request sent. We need to compare the response that the web server sent for this request which is as follows: In the response, we can see all the headers and their corresponding values; the important header field that was missing in the request sent by the ISA server was “ContentEncoding” which is present in the web server response with value “gzip”. By default ISA server would send this header with values as gzip and deflate but in this case it is not sending that. To find out why ISA server is not sending this header information in the request we need to analyze the BPA report. ISABPA -> add-ins section -compression filter and verify if compression filter is disabled. Following is the output from the ISABPA when it’s disabled: Compression Filter Name =Compression Filte
VSE ePO General Google Chrome OS Uncategorized UPS Backup Exec ← Not so muchresting… Active Directory Certification Authority not renewingcertificate → Error Code: 502 Proxy Error. The request is not supported.(50) September 17, 2009 Leave a comment As referenced in my last post, I had a problem with viewing a website. Whenever someone tried to view the site at work they got "Error Code: 502 Proxy Error. The request is not supported. (50)" The error is coming from Microsoft ISA Sever https://blogs.technet.microsoft.com/isablog/2010/05/24/error-502-proxy-error-the-request-is-not-supported-50-while-trying-to-access-websites-from-web-proxy-clients-behind-isa-server-2006/ 2004, to fix this you need to enable the compression filter in ISA Server 2004 Configuration > Add-Ins > tab Web Filters > properties Compression Filter > select Enable This filer. > Ok > Apply. This not only fixed the 502 proxy error but also an issue with pages appearing "stripped down" ie only text, no images. Share this:ShareFacebookTwitterGoogleLike this:Like https://restingsysadmin.wordpress.com/2009/09/17/error-code-502-proxy-error-the-request-is-not-supported-50/ Loading... Related Filed under ISA Sever 2004 Tagged with ISA Server 2004, Microsoft About Phill McSherryPhill McSherry has been working in the Australian IT industry for over 20 years and is the technical manager and solutions architect for managed services provider Titan Solutions - www.titansolutions.com.au Leave a Reply Cancel reply Enter your comment here... Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. (LogOut/Change) You are commenting using your Twitter account. (LogOut/Change) You are commenting using your Facebook account. (LogOut/Change) You are commenting using your Google+ account. (LogOut/Change) Cancel Connecting to %s Notify me of new comments via email. RSS LinksRSS - Posts Twitter I just supported How to Prepare for Emergencies on @ThunderclapIt // @Cryptozoic thndr.me/FsrLEs 2monthsago I'm entered to win Loot Crate's Crate-a-Day Giveaway! lootcrate.com/crate-a-day-gi… #lootcrate #giveaway 2monthsago #lfgsyd Forbidden Island https://t.co/SLMofgiIaL 2monthsago I unlocked the Import master achievement in Disney Infinity! raptr.com/PCVirus?type=t… 2yearsago I unlocked the Sorry? achievement in Disney Infinity! raptr.com/PCVirus?type=t… 2yearsago Categ
Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways to Get Help Ask a Question Ask for Help Receive Real-Time Help Create a Freelance Project Hire for a https://www.experts-exchange.com/questions/24728290/Error-Code-502-Proxy-Error-The-request-is-not-supported.html Full Time Job Ways to Get Help Expand Search Submit Close Search Login Join Today Products BackProducts Gigs Live Careers Vendor Services Groups Website Testing Store Headlines Experts Exchange > Questions > http://www.freelists.org/post/isalist/502-Proxy-Error-The-request-is-not-supported-50,8 Error Code: 502 Proxy Error. The request is not supported Want to Advertise Here? Solved Error Code: 502 Proxy Error. The request is not supported Posted on 2009-09-13 MS Forefront-ISA 1 Verified 502 proxy Solution 16 Comments 2,088 Views Last Modified: 2012-05-07 Hi all, I have an issue with an ISA 2004 on SBS 2003. The url to access is www.website.com:port number in other words, force a URL to a specific website rather than 80. I tried creating a rule to allow that specific port, allowing the URL, allowing the user even, no changes, ISA does not seem 502 proxy error. to understand such web requests. Any clues ? PS : same URL works just fine trough any other firewall/proxy of course, this is just an ISA thing. 0 Question by:unisolutions Facebook Twitter LinkedIn Google LVL 51 Best Solution byKeith Alabaster OK - got it. Ran through it with Wireshark - the response coming back is encoded - ISA will NOT like that at all as it cannot interrogate it through the http filter. I have not seen a method of altering Go to Solution 16 Comments LVL 51 Overall: Level 51 MS Forefront-ISA 40 Message Expert Comment by:Keith Alabaster2009-09-13 lol - this is likely why ISA is the best firewall/application gateway on the market. It doesn't allow any old crap to pass like most 'cheap' stuff will. Stranfely enough, Sidewinder, the other top classed firewall/proxy also needs good configuration as opposed to allowing automatic redirects. What Service pack of ISA are you running? Are you using the ISA firewall clients? How are you adding the port redirection to the URL? How have you tried adding another rule to ISA? 0 Message Author Comment by:unisolutions2009-09-14 :) Yeh well i
Date: Wed, 20 Aug 2008 08:24:13 -0400 http://www.ISAserver.org ------------------------------------------------------- The reason I ask is that shortly afterwards we started getting a bunch of people reporting that the MSN home page was all messed up. We found a computer that was experiencing this (not all of them were), and the page was showing up without graphics and everything was in one long column on the left side. Rebooting and having the firewall client re-detect the ISA server didn't help, but some of them seemed to correct themselves later. Apparently this is a cause for great concern, as they cannot do anything at all on the Internet if they cannot load the MSN home page. *grin* -----Original Message----- From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Harrison Sent: Tuesday, August 19, 2008 12:41 AM To: isalist@xxxxxxxxxxxxx Subject: [isalist] Re: 502 Proxy Error. The request is not supported. (50) http://www.ISAserver.org ------------------------------------------------------- That's a good Q - if I get time, I'll play with it. ..of course, you're welcome to also... -----Original Message----- From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Ball, Dan Sent: Monday, August 18, 2008 5:50 AM To: 'isalist@xxxxxxxxxxxxx' Subject: [isalist] Re: 502 Proxy Error. The request is not supported. (50) What would happen if you left the compression enabled and run this script? From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Harrison Sent: Friday, August 15, 2008 9:40 AM To: isalist@xxxxxxxxxxxxx Subject: [isalist] Re: 502 Proxy Error. The request is not supported. (50) Kewl! ..now for the other folks in the audience... When compression is disabled, ISA will strip off the "Accept-encoding" header