So when I connect to a network using a VPN, it takes my data which is wrapped in a TCP header, and re-wraps the whole packet into a UDP header.... What I don't understand is why does it get wrapped in another header at all? Why can I not just connect to my network using normal TCP packets and a password to access network drives? I am not confused about using UDP specifically, I know that wrapping a TCP packet inside of another TCP packet causes problems, but why wrap it at all?
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