Battlefield 4 LAN Party Issue(s)
How do you setup a home network to allow multiple systems/users (all licensed and working properly at their own homes) to play battlefield 4 on the same online server. We tried to do this, but it on...
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That's really all I can say on this, Those were the ports I assigned to BF3 to allow 2 computers on the same network to connect to multiplayer together.
They don't specifically need to be using that particular port range, but I found that port range allowed myself and my fiancee on BF3 multiplayer together.
You could try other port ranges though and see how you both fare.
Disable UPNP if it is enabled in your router. Doing this me and two friends were able to successfully play through the same internet connection (besides all the server and client crashes).
Also this ^
I forgot about UPNP to be honest.
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