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Right. This could be posted on either StackOverflow or here, becuz the scenario I'm working with involves both network settings and IIS configuration, but I'm posting here since I guess that's where it's stuck at the moment.

OK. I'm trying to setup a test website on my machine which connects to the Internet through a router (ZXDSL 831 CII). I've done the following:

  1. Created a dynamic DNS entry, say using Works fine.
  2. Configured Virtual Server on my router to forward incoming traffic on port 12345 to be forwarded to my local IP address (
  3. Enabled IIS Express on my local machine to run with admin privileges.
  4. Configured applicationhost.config to allow external connections.
  5. When I test my machine using a port checking tool, it tells me that the port 12345 is open.
  6. Trying to reach through the browser first shows "Resolving host", then says "Connecting..." and then after waiting for maybe 15 seconds, and then ends up with "Could not connect". Same thing happens when I type this address on another (virtual) machine.

I need to figure out where the problem lies. Is it my ISP blocking traffic from reaching my router (unlikely in my opinion), or is it the router not forwarding the packets to my machine, or is it the web server (IIS Express) not handling the requests. Any help will greatly be appreciated.

share|improve this question
From the web server, what is the result for netstat -an | find "12345" ? – user2196728 Dec 26 '13 at 9:29
@user2196728: TCP LISTENING TCP LISTENING TCP [::]:25094 [::]:0 LISTENING – dotNET Dec 26 '13 at 12:01
Ok so now let's try this : from another machine in your local network try telnet 25084 and tell us if it fails or not. – user2196728 Dec 26 '13 at 12:03

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