How to activate a port . Let's say (123 NTP on my machine ) . with ufw enable 123 (or 123/tcp or 123/udp) ? That is for firewall or that is all?

Question

I want to know how to activate a port ( dosent matter what port 43,53,etc )

How i do it ?

is ufw enable port (port/tcp or port/udp ) enough ? Or i need it to