[pkillarjun]

> sudo lsof -n -i -P | grep -i "cups"

>cupsd 2843 root 7u IPv6 12941 0t0 TCP [::1]:631 (LISTEN)

>cupsd 2843 root 8u IPv4 12942 0t0 TCP 127.0.0.1:631 (LISTEN)

There is no open UDP port for CUPSD, so relax.

[rcxdude]

because it's a separate daemon that listens on UDP. But it looks like at least it's not enabled in your config.