Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.

Multicast Traffic Forwarding over IPSec vpn

We are trying to forward multicast traffic for 239.1.1.2 between our Main Site to one of our remote sites via a Site-to-Site IPSec VPN connection.

I have following the instructions here: https://support.sophos.com/support/s/article/KB-000038580?language=en_US

But when I add the Multicast address to the Site-to-Site VPN configurations of our main site and the remote site, the VPN connection goes down, and they won't establish the connection until I remove the Multicast address from the Site-to-Site configurations...

I'm stumped as to why this is happening.

The instructions say to "add the multicast IP address/network in the Remote subnet section". 

So I created the following and added it to the VPN configurations:

Any ideas of what would cause this?



Added TAGs
[edited by: Raphael Alganes at 3:07 PM (GMT -7) on 22 Apr 2024]