Unidentified IP traffic TCP:8282

Hi,

I am trying to publish a mobile application (Nelix) that uses TCP port 8282.

I have made a user-defined protocol TCP Inbound port 8282 to 8282.

I have made a server publishing rule that uses this protocol and is poiting to the server running the application.

When trying to connect, I can see in the TMG logs, that the 'Default Rule' is blocking TCP 8282 as 'Unidentified TCP Traffic'. Why is that?

The TMG is only used for publishing (works just fine with websites, OWA, CRM etc.) so it is not used as gateway or proxy on servers or clients.

Thanks in advance!

/Michael