[Friend can't join my server]

I tried my best and did what you say... but it still doesn't work... it seems so

[Friend can't join my server]

How can the server host forwarding the correct port to the "correct machine" can u give me a short explanation? We are not on the same LAN but we both have allowed this following port:  11753

[Friend can't join my server]

Hello,

My friend and I have a problem. We want to play together on a Server, but every time we try to do this, my friend can't join. On the side there's a dark red symbol, so not like the other red Symbols, if he had the wrong Version of the game, no, it's darker as the other symbol. But there's no reason why he can't join. We had try some things, but nothing changed.

Can anybody help us please?

Thanks for a answer,

Kxmby