upd & openvpn

[almerilinux]

Hello comunity!
I am Fran from Spain
A few days ago I am testing several open source firewalls, and opnsense I think it is best option for my production systems for now, but I have a small problem that I do not understand very well.
When openvpn is configured through the udp protocol it does not work, instead of doing it through the tcp protocol, it's works.
I would appreciate it that someone could tell me, if there is any special reason that I have not seen in the documentation.
thanks in advance!

[franco]

Hola Fran,

The difference in UDP and TCP is just the transport of the tunnel's data. The question is are you trying to replace an existing system or is it a new VPN to be set up?

A likely candidate is a firewall tuned for TCP VPN or a general block for UDP in place.


Cheers,
Franco