firewall rules interface: difference between TCP/UDP and two different rules for tcp and udp
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this might come alongs as a stupid question but yesterday I had a weird occurrence on the latest build (2.5.1) where I opened a port on wan (1194 for openvpn) and it worked only when selecting UDP, it didn't when I was selecting TCP/UDP, the openvpn service is listening on UDP but I might just make it TCP on 443 or even 80 in order for my users to not be blocked by firewalls allowing only web surfing (some hotels do this in europe).
I was under the impression that TCP/UDP means any of those two protocols, isn't this the case?
is this a bug in the latest build? am I missing something? -
I can't speak about your issue, though I expect it should pass both. However, with firewalls you only open what you need. If you use only UDP for OpenVPN, then you only open UDP.