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Multicast Forwarding issues

We have recently set up Multicast forwarding between our main office and a remote location via a site-to-site vpn.

The Multicast forwarding is working from the remote location back to the main office, however, the system we need to multicast in the opposite direction cannot do so.

In the firewall logs at the main office, we are seeing the following:

And the traffic is not traversing the VPN as it should to the remote location.

I have static routes set up for the multicast traffic on both sides properly.

We are not seeing this denied messages on the remote firewall.

Added TAGs
[edited by: Raphael Alganes at 2:53 PM (GMT -7) on 23 Apr 2024]
Parents Reply
  • So, I may have identified the problem...

    In the instructions I used to set up Multicast Forwarding via the Site-to-Site VPN, in the actual VPN setup, it had the multicast network in one direction only on each end Remote for HQ, and Local for the remote site.

    When I went to add them in the reverse direction, I get a warning below the Local network settings saying to "Consider using tunnel interface" as shown below:

    This view is of the remote firewall.  Will this cause an issue with the Site-to-Site connection if I apply this?