Asus AX86U VPN: UDP vs TCP

[Jaime Alvarez]

After I encountered a couple of places that blocked my "normal" UDP vpn, I configured a second openvpn server using TCP and port 443. This second config works fine, although it is a bit slower. A simple speedtest.net comparison yields 180Mbps for downloads / 9 ms ping time for the UDP server, and 150 Mbps /50 ms for the TCP server connection.

Here's my concern. Are there any drawbacks from having both openvpn servers running? I like to connect to the UDP server by default, to take advantage of the slightly better bandwidth, and only switch to the TCP server when I can't get through, but don't really see any relevant difference. Plus I use mainly for securing my connection when using public WiFi hotspots. I don't know how to evaluate the processing overhead and whether it may become relevant in certain scenarios, but it seems sensible to leave only the TCP server.

Any thoughts?

 

[RMerlin]

Are there any drawbacks from having both openvpn servers running?

It`s fine.

 

[bluzfanmr1]

When traveling, I run both, in case one has an issue I can use the other. Works well.

 

[Jaime Alvarez]

Thank you. Another question if I may: anything wrong with using the same keys and certificates for both servers?

 

[RMerlin]

Thank you. Another question if I may: anything wrong with using the same keys and certificates for both servers?

It's fine for a home user. If the router were to get compromised, then certificates from both instances would get compromised anyway.

 

[Jaime Alvarez]

It's fine for a home user. If the router were to get compromised, then certificates from both instances would get compromised anyway.

That's what I thought. Thank you again!