Isa Error Code 64
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Yosefi - MSFTJanuary 30, 20090 Share 0 0 1. Introduction This post is based on a very interesting issue where an
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ISA Admin was publishing an internal Web Server that was working internally just host not available in net banking fine for a while. Internally the web server was listening on port 82 and therefore the bridging configuration on the
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Web Publishing rule was correctly setup to HTTP 82. However when users were trying to browse from outside they received the error below: Figure 1 – Error 64: host not background: the gateway or proxy server lost connection to the web server. available. To better address this issue we need to gather more data. 2. Gathering Data There are three main tools that can be used to isolate this issue: · ISA Logging · ISA Diagnostic Logging · Netmon Trace By gathering this data while the user was accessing the web site and getting the error it was possible to better understand what was host not available in net banking idbi happening. Let’s see: 1. ISA Serve Logging shows the error 64 and more details about the connection: Figure 2- ISA Server Logging. Notice in the details pane that: · ISA is sending a GET for the FQDN of the internal web server. · Error 64 here appears with more details saying that the network name is no longer available. · Write down the Req ID because it will be used in the filter for Diagnostic Logging 2. Diagnostic Logging shows the following sequence of events: Figure 3- Diagnostic Logging details. The sequence shows: · ISA Server sending the connect request to WSRVCT.contoso.msft on the IP 10.20.20.25 – both are correct. · ISA Server is forwarding the correct path (/*) · Target host header is showing as www.contoso.com · Right after ISA Server sends this request to the target host the web server replies with a response status equals to 400. 3. Network trace shows more details about this 400 > ISA sends HTTP GET (notice the host header): 10.20.20.2 10.20.20.25 HTTP GET / HTTP/1.1, NTLMSSP_NEGOTIATE Hypertext Transfer Protocol GET / HTTP/1.1\r\n Request Method: GE
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Login Message << Older Topic Newer Topic >> Error Code 64 Host not available - Problem solved - 21.Sep.2004 11:06:00 PM pegeberg Posts: 16 Joined: 1.Dec.2003 From: South Dakota Status: offline https://blogs.technet.microsoft.com/isablog/2009/01/30/users-receive-an-error-64-when-browse-a-web-site-published-through-isa-sever-2006/ Hello,On certain web pages (and not many) I am getting an error page from ISA 2004 server that reads like this.Network Access Message: The page can not be displayed.Explanation: The request timed out before the page could be retrieved.Technical information.Error Code 64: Host not availableBackground: The gateway or proxy server lost connection to the Web Servr:Source: Remote server.Running the live log monitor on the clients http://forums.isaserver.org/Error_Code_64_Host_not_available_-_Problem_solved/m_340004100/tm.htm accessing this site: The "GET" command returns a connection failed.When first browsing to the page www.dakotadirectory.com it works fine. The initial connection is great. When clicking further into the page to do a search for a business "name" like santema or "heading" like insurance I get the above proxy default error page. I can not replicate this error on my home machine or on a dsl connection we have at work that is not behind the ISA server. After getting the message a refresh will bring up most of the page with out all the link images and the refreshing causes the logging to create additional "connections failed" with the "GET" command. It does not matter if it SNAT or Firewall Client. I have searched groups.google.com, this board and microsoft board and can not find a similiar problem. The firewall rule that I have going from internal --> external is basically an any any rule. This is a tri-homed machine. [ October 10, 2004, 11:45 PM: Message edited by: oscararter ] Post #: 1 Featured Links* RE: Error Code 64 Host not available - Problem solved - 22.Sep.2004 9:49:00 PM pegeberg Posts: 1
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