Hi, In the rule of 'udp broadcasting', there are 2 masks (0.0.0.255) on the 'source' side. UDP broadcasting sends messages to 255.255.255.255. My questions: (1) why 2 masks on the source side? (2) If I leave 'source' blank and change 'destination' to 255.255.255.255, can I get the same effect? thanks in advance.