Error 502 Proxy Error Isa 2006
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| Address Book | Member List | Search | FAQ | Ticket List | Log Out ISA Error Code 502 Proxy Error Users viewing this topic: 502 proxy error chrome none Logged in as: Guest Tree Style Printable Version All Forums >> 502 proxy error web service [ISA 2006 Web Proxy] >> Web Proxy Client >> ISA Error Code 502 Proxy Error Page: [1] Login Message 502 proxy error apache reverse proxy << Older Topic Newer Topic >> ISA Error Code 502 Proxy Error - 12.Jun.2007 1:46:22 AM jacod@naledi.com Posts: 1 Joined: 12.Jun.2007 Status: offline Hello all, We are running ISA Server https://support.microsoft.com/en-us/kb/935693 2006 Enterprise. All users use web proxy on port 8080 to browse the Internet from the Internal LAN. Our users can succesfully browse the Internet except when they want to access one specific web site. The web site is: http://www.dataviz.com/downloads/demo/index.html?product=RDS When they access the web site, the following ISA error is displayed: Error Code: 502 Proxy Error. The HTTP message includes an unsupported header http://forums.isaserver.org/ISA_Error_Code_502_Proxy_Error/m_2002046592/tm.htm or an unsupported combination of headers. (12156) Is there something we can do on our side to give access to the specific web site? Thank you. Post #: 1 Featured Links* RE: ISA Error Code 502 Proxy Error - 13.Jun.2007 5:33:22 PM Yorgy Posts: 158 Joined: 20.Sep.2006 Status: offline You may want to look over this KB from Microsoft and consult with them to see if there is a Hot Fix available for 2006. The KB only applies to 2004 with the issue you are experiencing. http://support.microsoft.com/kb/915045/ Yorgy _____________________________Life is a zoo in a jungle! (in reply to jacod@naledi.com) Post #: 2 RE: ISA Error Code 502 Proxy Error - 25.Jun.2007 7:22:21 AM Johan_A Posts: 1 Joined: 27.Apr.2005 From: Sweden Status: offline We got the same error when we try to access http://www.esmaker.net/nx2/ Running ISA 2006 STD. http://www.dataviz.com/downloads/demo/index.html?product=RDS dosent work for us either. Yorgy have you fix the problem? /Johan (in reply to jacod@naledi.com) Post #: 3 RE: ISA Error Code 502 Proxy Error - 27.Jun.2007 12:31:49 PM SFletchall Posts: 2 Joined: 27.Jun.2007 Status: offline How about http://www.gamedev.net/community/forums/themes/theme1/theme.asp How about http://www.wellmark.com ? Now, h
502 Proxy Error Whenever an ISA or TMG server throws a 502 Proxy Error your way, you know you are probably in for a real hurdle. But with a little familiarity with what a http://www.chicagotech.net/msapps/isa1.htm 502 error means, and how it can be fixed, you will be back in business in little time. First, let’s take a look at the definition of 502 HTTP response code: 502 Bad Gateway The server was acting as http://www.tech-archive.net/Archive/ISA/microsoft.public.isa/2008-08/msg00040.html a gateway or proxy and received an invalid response from the upstream server. Pay close attention to what that is saying. The proxy (meaning your ISA or TMG server) received an invalid response from the upstream server (implying that 502 proxy the internal webserver that you are publishing!). Unfortunately that is not always the case as ISA and TMG can throw that error when they are unhappy about something that a normal browser would readily accept. They can also throw one of several different kinds of 502 depending on the circumstances. Understanding is critical to a quick resolution. Don’t just stop reading at 502, check the rest of the response. Here is how to determine whether the problem is with 502 proxy error your ISA/TMG, or on the internal server: 1. Open a browser on the internal network. 2. Access the URL in question. 3. If you can view the content successfully, the problem is with your ISA/TMG. If not, the problem is with your webserver. Since this post is about ISA and TMG, let’s assume you are able to view the content internally just fine, so we’ll keep discussing ISA/TMG. 4. Go to your log viewer. In ISA that is Monitoring, or in TMG that is in Logs & Reports. 5. Edit the filter to look at live logs and have the user try again, or filter on the time range to see the error. Add the “Filter by” criteria for HTTP Status Code, and set it equal to 502. 6. Run the query, and examine the results. Some of the frequent causes of ISA/TMG generating 502s are: • A 502 can be thrown by the ISA/TMG when content filtering is enabled and something in the response is being blocked. Disable content filtering and see if you are then able to access the resource. If you are, look at the header in one of the logged errors (in your log, click the more information link on the error) and see what content type is being returned by the published server. Authorize that in your content filter. • If you are using ISA/TMG as a clie
- installed hotfix and edited registry key (there was no entry RAT in HKLM\Software\Microsoft, create the additional entries from there) - cleared the DNS cache - cleared the web proxy cache - installed the firewall client and added *.sun.com to the exceptions - disabled compression I still get the error when trying to download the SUN JRE, here is the direct link: http://dl8-cdn-01.sun.com/s/ESD44/JSCDL/jdk/6u7/jre-6u7-windows-i586-p-s.exe?e=1218525172189&h=3b01a4e56c8fe5cc79a7187681f8de04/&filename=jre-6u7-windows-i586-p-s.exe If I disable the rule and use the above link, I'm prompted to save or open the file. Enable the rule, and I get error 502 (12202) again. I collected the cab file with IsaBPA, took a screenshot and captured the log files. I zipped all this and just sent it to your e-mail address. For now, I will restore the ISA server settings (logging, compression). Any other suggestions are welcome. Thanks for your help! Kind regards, Dagwin -- Dagwin "Terence Liu [MSFT]" wrote: Hello Customer, Thank you for posting here. According to your description, I understand that you get error "502 Proxy Error. The ISA Server denied the specified Uniform Resource Locator (URL). (12202)" when you access some web sites after you enabled a deny rule for some other domain name sets. If I have misunderstood the problem, please don't hesitate to let me know. Based on my research, I suggest we try the following steps to see if we can resolve this issue: I. Please apply the following hotfix: An ISA Server 2006 Web Proxy client receives error code 502 when a user tries to visit certain Web sites http://support.microsoft.com/kb/935693 As per the KB935693, we need to create the registry key in the registry of the ISA servers. The path is HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RAT\Stingray\Debug\Web Filters. And the registry key can be created as follows, Value name: DROP_CONTINUATION_LINES Value type: REG_DWORD Value data: 1 Then, test this issue. II. If the issue persists, please clear DNS cache and Web Proxy cache on ISA Server. a. Clear the DNS cache of the ISA server. Please download and r