Error Code 502 Proxy Error. Forefront Tmg
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360 games PC games http 502 proxy error Windows games Windows phone games Entertainment All Entertainment
502 Proxy Error Apache
Movies & TV Music Business & Education Business Students & educators
502 Proxy Error The Proxy Server Received An Invalid Response From An Upstream Server
Developers Sale Sale Find a store Gift cards Products Software & services Windows Office Free downloads & security Internet https://support.microsoft.com/en-us/kb/2423401 Explorer Microsoft Edge Skype OneNote OneDrive Microsoft Health MSN Bing Microsoft Groove Microsoft Movies & TV Devices & Xbox All Microsoft devices Microsoft Surface All Windows PCs & tablets PC accessories Xbox & games Microsoft Lumia All https://support.microsoft.com/en-us/kb/837451 Windows phones Microsoft HoloLens For business Cloud Platform Microsoft Azure Microsoft Dynamics Windows for business Office for business Skype for business Surface for business Enterprise solutions Small business solutions Find a solutions provider Volume Licensing For developers & IT pros Develop Windows apps Microsoft Azure MSDN TechNet Visual Studio For students & educators Office for students OneNote in classroom Shop PCs & tablets perfect for students Microsoft in Education Support Sign in Cart Cart Javascript is disabled Please enable javascript and refresh the page Cookies are disabled Please enable cookies and refresh the page CV: {{ getCv() }} English (United States) Terms of use Privacy & cookies Trademarks © 2016 Microsoft
| Address Book | Member List | Search | FAQ | Ticket List | Log Out 502 Proxy http://forums.isaserver.org/502_Proxy_Error%25_Forefront_TMG_denied_the_specified_Uniform_Resource_Locator_(URL)%25_(12202)/m_2002105582/tm.htm Error. Forefront TMG denied the specified Uniform Resource Locator (URL). (12202) Users viewing this topic: none Logged in as: Guest Tree Style Printable Version All Forums >> http://www.chicagotech.net/msapps/isa1.htm [Threat Management Gateway (TMG) 2010] >> General >> 502 Proxy Error. Forefront TMG denied the specified Uniform Resource Locator (URL). (12202) Page: [1] Login Message << Older 502 proxy Topic Newer Topic >> 502 Proxy Error. Forefront TMG denied the specified Uni... - 22.Dec.2010 2:01:02 PM Tarek Mansour Posts: 1 Joined: 22.Dec.2010 Status: offline Hi, I've just installed TMG 2010 behind our internet router. The TMG server has 2 nics one linked to the internal LAN with IP (192.168.10.123) and the other to 502 proxy error the router with IP (192.168.1.138), and it has access to the internet. I got a client with IP (192.168.10.192) and configured its LAN Settings to (192.168.10.123) with port 8080; and i configured a rule on the TMG to allow All Outbound Traffic from IP (192.168.10.192) to External. I now try to open just "www.google.com" and i get: Technical Information (for support personnel) Error Code: 502 Proxy Error. Forefront TMG denied the specified Uniform Resource Locator (URL). (12202) IP Address: 192.168.10.123 Any Help? Thank You _____________________________Eng. Tarek Mansour ERP & Security Administrator Post #: 1 Featured Links* RE: 502 Proxy Error. Forefront TMG denied the specified... - 22.Dec.2010 2:10:48 PM paulo.oliveira Posts: 3472 Joined: 3.Jan.2008 From: Amazon, Brazil Status: offline Hi, suggest you to take a look at Deb Shinder´s article series about TMG Controlling Internet Access: http://www.isaserver.org/tutorials/Controlling-Internet-Access-Short-Primer-TMG-Access-Rules-Part1.html Regards, Paulo Oliveira. _____________________________Microsoft Premier Field Engineer (PFE) Blog: http://poliveirasilva.wordpress.com/ Twitter: https://twitter.com/poliveirasilva (in reply to Tarek Mansour) Post #: 2 Page: [1] << Older Topic
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 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 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 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 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 client proxy, and the destination server is running on a non-standard port, you can encounter this error. Create an access rule allowing the non-standard ports. • “502 Proxy Error. No data record is available. (11004)” is generated when the ISA/TMG cannot resolve the internal resource’s name to an IP