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About access destination and what type of communication protocol

I’m working on Unreal Engine in my office.
Recently, I tried update UE launcher to latest version, but I couldn’t connect network.
I told this to network service department in my office, but they couldn’t solve the problem.
We’re wondering it’s due to my office security and want to know specifications of UE launcher updates, especially about its access destination and communication protocol.
Anyone who knows this , teach me please.