I am planning on testing OpsCenter to see how it can monitor a multi DC cluster. There are 2 DCs each on a different side of a firewall. I've configured NAT on the firewall to allow the communication between all Cassandra nodes on ports 7000, 7199 and 9160. The cluster works fine. However when I start OpsCenter (obviously on one side of the firewall) the OpsCenter CF gives me two schema versions in the cluster and basically messes up everything. Plus, I can only see the nodes on one the same side.

What are the requirements to let the OpsCenter on one side see the Cassandra nodes and the OpsCenter agents on the other, and viceversa?

Is it possible to use OpsCenter across a firewall?