I was wondering does unity block packets from custom made servers?
Short answer: No.
Long answer: What do you mean by this? Unity does not, by default, listen on any TCP or UDP ports, so it doesn’t accept any packets from anyone unless you explicitly add some kind of networking layer to it.
Well I had client/server code working and I was able to receive packets no problem, but suddenly last week all I can do is connect the client to the server the packets for whatever reason don’t make it to the client. With wireshark I can see them coming in but poof they just don’t get there. Been trying to figure this out for a week now and I have no clue…