We have a vSZ running with 3 interfaces behind a router.
Now we want to add a 2nd node to this cluster, also with 3 interfaces. This 2nd node is at a remote site and also behind a router. What ports should we forward in order to have te cluster interfaces to communicate?
I'm not sure clustering is supported behind nat. I'd be very surprised if it works at all. As others mentioned, a vpn is your best bet as I don't think the clustering interfaces are nat aware -as opposed to the main AP-facing nic.