Can nodes on the same blockchain communicate behind firewalls or nats?

Question

If I have one multichain node at my house behind my home router with an IP address of 192.168.x.x and I have another multichain node on the same blockchain at a friend's house behind his home router, will they be able to communicate with each other without having public static IP addresses?

Answer 1

In principle yes, but you need to set up port forwarding on at least one of your routers to the node behind it, and initiate the connection from the other node.