Error 502 Proxy Error Request Not Supported
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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 502 proxy error apache web proxy clients. When those users are trying to go to certain websites they get
502 Proxy Error Dns Lookup Failure
error "502 proxy error, the request is not supported (50)" message and they are not able to view the page. Data collection to 502 proxy error apache error reading from remote server 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
502 Proxy Error Reason Error Reading From Remote Server
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 502 proxy error openshift 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 Filter Version =4.0 Vendor =Microsoft (R) Corporation Description =Enables HTTP/HTTPS compression Enable this filter =False Direction =fpcFilterDirectionBoth Order =4 Relative Path =comphp.dll Priority =fpcFilterPriority_High Vendor Parameters Sets = PersistentName ={8EA49FDD-FFDC-4190-8A66-724BB0342F9F} Guid ={8EA49FDD-FFDC-4190-8A66-724BB0342F9F} Resolution In such a scenario where compression filter is disabled and web server in its responses send contentencoding http header or sends the compressed response, ISA server would block that response with result code as
a comment Go to comments Error 502 proxy error. The request is not supported(50) while accessing websites from the web proxy clients behind TMG 2010 Cause The webserver which host the affected site
502 Proxy Error Chrome
is sending compressed data Resolution Open Forefront TMG Management Console Go to System Menu-Select
502 Proxy Error Web Service
Web Filters –Double Click compression filter –select ‘Enable the filter' Share this:LinkedInTwitterFacebookLike this:Like Loading... Related Categories: TMG/ISA Comments (2) Trackbacks 502 proxy error apache reverse proxy (0) Leave a comment Trackback Nadri Ahmad October 22, 2013 at 11:18 am Reply I also have this problem ..i try and it's work Thank You… seneej October 22, 2013 at 11:39 am Reply Glad to 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/ know its helped No trackbacks yet. 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 https://seneej.com/2013/08/27/tmg-502-proxy-error-the-request-is-not-supported-50/ Notify me of new comments via email. SCVMM 2012 SP1- SMI-S Provider storage discovery wizard ‘Next' button is greyedout How to Perform Maintenance on Exchange 2010 DAGNode RSS feed Google Youdao Xian Guo Zhua Xia My Yahoo! newsgator Bloglines iNezha Twitter Search for: Disclaimer All blog postings are provided “AS IS” with no warranties and is not supported by the author. All Trademarks and copyrights belong to their owners and are used for identification only. Also, the views expressed on this website/blog are mine and do not reflect the views of my employer Recent Posts Migrate Pass-Through Disk storage attached hyper- v virtualmachines Export AD Users Password Expiration Report to CSV with PowerShell from Domaincontroller How to disable SMB/NETBIOS NULL Session on domaincontrollers Hyper-V virtual Fibre Channel - Virtual machine direct storage array connectivity withHBA Hyper-V guest failover cluster- Provisioning Shared VirtualDisk Categories Active Directory (18) Cluster (1) E Free Books (1) Exchange (6) HYPER V (7) Lync (4) Microsoft (1) MS SQL Server (1) Outlook (1) Private Cloud (5) SCCM 2012 (6) SCOM (1) Sharepoint (1) Storage (3) TMG/ISA (1) Veritas Netbackup (1) Windows Servers (3) Me on Twitter RT @PyroTek3: "Accidental Outsourcing" - what happens when defenses are breached and an outside entity gains full control of Active Directo… 1monthago R
for 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 https://www.experts-exchange.com/questions/24728290/Error-Code-502-Proxy-Error-The-request-is-not-supported.html a Freelance Project Hire for a Full Time Job Ways to Get http://www.gfi.com/support/products/Error-502-Failed-Connection-Attempt-This-request-is-not-supported-when-trying-to-access-a-website Help Expand Search Submit Close Search Login Join Today Products BackProducts Gigs Live Careers Vendor Services Groups Website Testing Store Headlines Experts Exchange > Questions > Error Code: 502 Proxy Error. The request is not supported Want to Advertise Here? Solved Error Code: 502 Proxy Error. The 502 proxy request is not supported Posted on 2009-09-13 MS Forefront-ISA 1 Verified Solution 16 Comments 2,097 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 502 proxy error that specific port, allowing the URL, allowing the user even, no changes, ISA does not seem 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
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