I can't join the server hosted upstairs?

[Bobman]

Okay, so my server is working fine, people can connect and its all good. but when it's hosted upstairs, and I want to get on it downstairs on the mac, it says it's dead? Server hosted on the PC, can't get on with a mac? Do I have to port forward for both computers? I would like to know why I cant join the same server on different computers. My friend is hosting a server upstairs, (Port forwarded) and I can't join it downstairs (Un-port forwarded)? 

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[Cody574]

You have to Query LAN to join any servers on your network.

[Kalphiter]

Okay, so my server is working fine, people can connect and its all good. but when it's hosted upstairs, and I want to get on it downstairs on the mac, it says it's dead? Server hosted on the PC, can't get on with a mac? Do I have to port forward for both computers? I would like to know why I cant join the same server on different computers. My friend is hosting a server upstairs, (Port forwarded) and I can't join it downstairs (Un-port forwarded)? 

You have to forward for the computer hosting.
You cannot forward both at the same time unless you use different ports.

[Bobman]

You have to Query LAN to join any servers on your network.

thank you.