Bridged Mode: is it possible to block Multicast traffic?

ryangriggs

I have a bridged mode setup between two cellular modem sites.

The sites house multiple Allen Bradley PLCs which generate a lot of multicast traffic.

To prevent excessive data usage costs, it would be expedient to block this multicast traffic from crossing the VPN.

Is this possible in Bridged mode?

I obviously don't want to break ARP in the process.

Thanks!

TinCanTech

Disable --client-to-client (if it is enabled) and use iptables/ebtables or whatever firewall you use.