(on 02/20/2020 at 7:54pm mountain time, Frank said)
Looks fine, CUPSD, is listening on both ipv4 and ipv6. There does not seem to be anything out of the ordinary. If not already done so, install and configure a firewall. You can do 'systemctl status firewalld' to see if firewall is enabled
It is enabled: -bash.5[~]: systemctl status firewalld ● firewalld.service - firewalld - dynamic firewall daemon Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled) Active: active (running) since Thu 2020-02-20 11:04:08 MST; 8h ago Docs: man:firewalld(1) Main PID: 908 (firewalld) Tasks: 2 (limit: 4915) Memory: 41.0M CGroup: /system.slice/firewalld.service └─908 /usr/bin/python3 /usr/sbin/firewalld --nofork --nopid
Feb 20 11:03:54 [sysname] systemd[1]: Starting firewalld - dynamic firewall daemon... Feb 20 11:04:08 [sysname] systemd[1]: Started firewalld - dynamic firewall daemon. -bash.6[~]: