I have an application (Synology Assistant) that sends broadcast UDP messages to port 9999. When ZA is running these are blocked without any logging.
Even when the Firewall is set Off both for the Internet and Trusted Zones the messages are blocked. The Firewall Advanced option "Filter IP traffic of 1394" is unchecked
and I have in the Program control set Access for the application.
Only when a I shutdown ZA the message can be seen (verified with WireShark).
I'm running ZA Extrem Security 9.1.008.000 on Vista SP2.