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by cbhl 3981 days ago
Generally these well-intentioned networks block the usual VPN and tunneling solutions (think kid and a school network with a firewall that only allows FTP, HTTP, and HTTPS).
3 comments

At which point you simply use these ports for your VPN.

OpenVPN can use TCP, it can use UDP, it can use whatever port you like, it can even use a fixed key to turn all traffic into random noise (obfuscating protocol structures).

Thus the value of having a multiplexer which allows you to run these on 80 and 443, while still running a web server.
Doesn't even have to be that nefarious - I am blocked from using my OpenVPN tunnel (UDP and TCP) from at least two restaurants that I'm aware of.
Yeah, but these well intentioned networks also often do packet inspection to block simple workarounds.