Handle IPTV RTSP traffic with OPNSense

[JGeek00]

Hi everyone.

I have installed OPNSense on one of these fanless mini PCs with multiple network ports to act as my home router.

On my home, I have an Internet connection and an IPTV service with Movistar, one of the main Spanish ISPs. The Internet connection is working fine since the first moment, but I'm having a lot of problems to configure OPNSense to handle the IPTV traffic.

Movistar's connection works with 3 VLANS:
- VLAN 6 for Internet connection (with PPPoE) -> Working ✅
- VLAN 3 for VoIP -> I don't use it
- VLAN 2 for IPTV (static IP with one different IP for each user) -> ❗️ Not working

There are 3 groups of features that the TV service has:
- Live TV (some channes are protected with DRM) and the menu -> this data comes from the IPTV VLAN -> working ✅
- Apps like Netflix, Disney+ or DAZN, and other menus that require access to the WAN VLAN -> working ✅
- VOD and timeshift (this is RSTP traffic) -> not working ❗️

The only thing that remains is to handle that RTSP traffic. The rest is done.

I have been doing my research on the Internet but I don't find any information until I found this PR on the OPNSense's GitHub repo (https://github.com/opnsense/plugins/pull/1312). Seeing this I understand that OPNSense does not have an option to handle RTSP traffic "out of the box" and has to be manually configured. If someone could help me to configure my OPNSense instance to handle that RTSP traffic it would be highly appreciated.

Thanks.