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SonicOS 5.8.1 Administrator Guide
Enabling Multicast Through a VPN
To enable multicast across the WAN through a VPN, follow:
Step 1 Enable multicast globally. On the Firewall Settings > Multicast page, check the Enable
Multicast checkbox, and click the Apply button for each security appliance.
Step 2 Enable multicast support on each individual interface that will be participating in the multicast
network. On the Network > Interfaces page for each interface on all security appliances
participating, go to the Edit Interface: Advanced tab, and select the Enable Multicast
Support checkbox.
Step 3 Enable multicast on the VPN policies between the security appliances. From the VPN >
Settings page, Advanced tab for each policy, select the Enable Multicast checkbox.
Step 4 The resulting Access Rules should look as follows: