Wan Multicast traffic not wanted

[lshantz]

I am using the latest firmware updates and while looking at NTOPNG data, I have discovered that my security cameras that use multicast are blasting the traffic out the WAN port as well as LAN. I thought you had to specifically open multicast to WAN. ?? I am not seeing where I have activated it and do not know what the ramifications would be by attempting to block this traffic. I'm sure it is something simple, but my searches have come up blank. Anybody?