Hi, I'd like to watch video stream, which is broadcast into our WAN as RTSP multicast, on the computer connected to the WAN through Asus WL-500gp (home gateway), but I'm not sure how to do the settings.

As I can see on the PC connected to WAN directly, the connection involves 1234 and 1235 ports and 239.255.x.y local (?!) address (unrelated to the WAN or LAN IP address range). I am unable to play it even in DMZ and 1234 and 1235 udp ports triggered.

Someone knows how can I set it well ?
Thanks