Are there any OpenVPN pros here?
I have that issue that on my guest WiFi I can't connect to my OpenVPN server that listens on TCP/80 while it works perfectly on any other network. So I am trying to debug what makes this guest network different. 🤔
So far I noticed that the TCP handshake succeeds but after that I get only TCP retransmissions and then the VPN client cancels the attempt and retries.