IIS web service responds on server, not from remote client

Posted by Aharon Manne on Server Fault See other posts from Server Fault or by Aharon Manne
Published on 2013-10-29T09:09:41Z Indexed on 2013/10/29 9:56 UTC
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I have installed a web service on a server running IIS (v6, as far as I can tell). There is another service installed, which responds as expected. My service responds correctly when a browser is pointed to localhost, but there is no response when a remote client tries to query the service.
Fiddler on the remote client simply reports a timeout. Wireshark on the remote client shows no response at all from the server, no NACK, nothing.
Wireshark on the server detects no query at the relevant port (the service is installed on port 8080). There are no relevant entries in the event viewer.
Obviously there is some issue of permissions or authentication. I have tried to compare my service to the service that works, but I have not been able to locate relevant parameters. Any help would be greatly appreciated.

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