Good Afternoon!

We are working with multicast and IGMP groups on our CloudStack infrastructure, 
and I have a question regarding security groups.

To create an ingress rule, one must navigate to the security groups panel then 
add a new rule based on protocol. The values allowed are ICMP, TCP, and UDP. I 
am concerned that the IGMP member query messages on the network are being 
blocked by the security group settings, as our VMs continually act as if they 
have been kicked out of the membership group.

Are IGMP packets blocked by security groups by default? If so, how do we enable 
them?

Thanks!

Kenny Warren, MITM
Associate Information Assurance Engineer
Orbis Technologies, Inc.
443.569.6722
www.orbistechnologies.com<http://www.orbistechnologies.com/>

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