Is there a list of ports that need to be open from a firewall perspective if you are setting up distributed monitoring or high availability on either differented LAN segments seperated by a firewall or setting up pollers to report back to a central master server.

I.e. if I want to monitor remote offices and place a poller in each remote office what firewall ports needs to be open for to receive commands from the master and report back. It looks like at least port 7771 for the poller but does the scheduler port (7768) need to be open as well?