Does the server Firewall which allows Outgoing traffic on Port 80/TCP also allow on Port 80/UDP?

问题

Is the Windows Firewall which accept outgoing traffic on port 80/TCP allow outgoing traffic also when we use UDP protocol.

Does a Firewall in most cases control the port number only or controls the used Protocol also ?

回答1:

TCP and UDP ports are entirely different from each other. So, TCP/80 has nothing to do with UDP/80, except for the number. From a firewall's perspective, they are entirely separate things with separate rules.

来源：https://stackoverflow.com/questions/9280136/does-the-server-firewall-which-allows-outgoing-traffic-on-port-80-tcp-also-allow