TCP vs. UDP

[8U12Bk9f 0]

speed related. which one is the fastest and more secure?

[shiro21 4]

Neither is more secure than the other. They are not built for security.

In terms of speed, UDP is typically faster as it does not have any overhead. TCP is more reliable because it sends acknowledge requests for each packets but it comes at the cost of typically slower performance. However, OpenVPN using UDP will automatically resend any lost packets anyway so it's no big deal.

In most cases, UDP is preferred.

[Staff 9751]

speed related. which one is the fastest and more secure?

Hello!

In a few words, UDP is more efficient, but TCP is mandatory when you want to connect over an http or socks proxy. Also, TCP may be necessary if you find difficulties during the handshake. TCP implements full error correction, and this is at the same time a plus and a minus.

Please refer to the FAQ for a more detailed comparison. https://airvpn.org/faq

Kind regards