1. Go to the NFA->Admin->Protocol Names page.
2. Click "Select A Protocol"
3. Search based on "Port Number" and "UDP Ports"
And find the problem destination port and select it:
4. Once selected click "Edit Protocol" and update the "Protocol Name" field to what you want to be displayed and click Submit.
5. Go back to the report and you should immediately see the new name reflected in your reports.