שאלה | What is the first solution to the NAT traversal problem, where a client wants to connect to a server with a local address?

What is the first solution to the NAT traversal problem, where a client wants to connect to a server with a local address?

		Statically configure the NAT router to forward incoming connections on a specific port to the local server address.
		Modify the server application to use the public NAT IP address instead of the local address.
		Require the client to connect directly to the local server address, bypassing the NAT router.
		Use a dynamic DNS service to map the public NAT IP address to the server's local address.