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Event ID: 14148 in ISA Server – Port 8080

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I was configuring ISA Server for a client, and ran into an interesting issue.  It made sense once I realized what the error was.  I was creating two rules, 1 for IP:80 and one for IP:8080.  It was the same IP, but there was an app running on 80, and another app running on 8080.

HTTP 502 status error with the message "The URL does not use a recognized protocol, Confirm that a valid protocol is in use (for example, HTTP for a Web request)"

I was having some issues (see above), and after looking at the event logs, I noticed the Event ID: 14148. 

The Web Proxy filter failed to bind its socket to <XXXXXXXX> port <XXXX>. This may have been caused by another service that is already using the same port, or by a network adapter that is not functional.

To make a long story short – you can’t publish a rule in ISA for an IP that is using port 8080.  ISA considers it ‘special’.  smile_tongue

For additional info, read this TechNet Article: https://technet.microsoft.com/en-us/library/bb794799.aspx