The Networking tips listed a bunch of ports but not what they are for. It basically says I need to use UPNP if I have multiple people playing on one network, but it doesn't give the most important part of the information, which ports are needed for UPNP to work correctly so I may configure my network for the three players in our house, without opening every port for UPNP.
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13 Repliesupnp stands for universal plug n play. this allows the devices to set port forwarding themselves. takes you completely out of it. you don't need to set up anything.