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Me and my friend are trying to connect via a LAN world on Feed the beasts Yogscraft, and I'm pretty sure it has something to do with him being on a mac. I don't really want to start up a bukkit server or whatever server Yogscraft uses, and he is using a mac that he doesn't know the password to, so I was initially going to check the firewall to see if Minecraft was allowed through.
Is there any other suggestions? Another thing to note is that I am PC and I am unable to connect to his server when he starts it on mac (It simply doesn't show)