Why TCP over TCP is bad?
You might of asked why Road Warrior VPN.com offers two different kinds of VPN options TCP and UDP? Which one is better and why? To start off we offer two different kinds of VPN servers in case one type happens to be blocked. We have found that some very restricting environments will only allow TCP over port 443, which is what encrypted websites use.
In genearal TCP will try to retransmit a packet if it does not make it to the final destination. A example of TCP would be any website that you go it uses TCP already. So using the TCP VPN and going to a website would be a example of TCP over TCP. Not only are TCP packets larger, but they also have other features that make them not desirable for a VPN server such as timeouts. That is why we suggest using the UDP VPN server when ever possible. As always contact Support@RoadWarriorVPN.com if you have issues with the VPN server.
Article about why TCP over TCP is bad explained in greater detail. http://sites.inka.de/~W1011/devel/tcp-tcp.html