Problem from outside LAN - isolated VLAN camera's network 
Hi, for my cameras I have isolated VLAN, which cannot access to internet. Cameras can access only to NTP sync and to my default LAN, where is also located Homebridge on RPi.  My main Homekit device is AppleTV and Homepod.

If I'm on my WiFi, there's no problem with pictures/streams from cameras, but outside (cellular,...) is problem. 

Can you tell me, which ports must be opened? I think, that my problem is here. But I thought, that all comunications is thought ATV or Homebridge server on RPi.