Connecting in a multiplayer game doubt

I’m developing a multiplayer game and I’m using the CREATE A SESSION online node to start a session. But the clients only can connect to the host via Hamachi. I tried the FIND and JOIN SESSION but only using hamachi my friends can connect to the host. My OnlineSubSystem is “DefaultPlataformService = Null”. Is there a way to connect to the host without hamachi via LAN or not?

Thank you.

You can use console commands. To host a game, use “open mapName?listen”. Then, to connect to the host, use “open IPAddress”.

You can use Steam and Steam’s test ID to connect and test with your friends.