Firewall Default DROP IGMP - how to allow?

Question

Hi all, 
 I'm troubleshooting an issue with google Chrome Cast and I suspect my issue is with IGMP. I have two APs, setup in Access Mode and I'm seeing a lot of Default DROP IGMP entries in the FW Logs.

09:33:05 
 Default DROP 
 IGMP

10.0.0.20

&rarr;

224.0.0.1

I don't have many firewall rules, certainly for internally, but I can't see where this is being dropped and not sure how to create a rule to allow on this one? 
 Using UTM 9 - any help would be greatly appreciated. 
 
 Cheers, 
 Matt

Jas Man · Accepted Answer

Hi Matt, 
 IGMP is dropped by default by the last rule in the firewall rule set. I found no option to allow IGMP in generally. But it's possible to create a firewall rule which allows IGMP: 
 
 Source: Network or single hosts / your APs 
 Service: Any 
 Destination: IPv4 Multicast 
 
 I'm not sure if the destination object "IPv4 Multicast" is an standard object in Sophos UTM, or if I had create it. So if you need to create this object it must look like this: 
 
 Jas