firewalld service file for Unifi SDN Controller Software. Save to /etc/firewalld/services/

unifi-sdn.xml

<?xml version="1.0" encoding="utf-8"?>

<!-- Refer to: https://help.ubnt.com/hc/en-us/articles/218506997-UniFi-Ports-Used -->

<service version="1.0">
  <short>unifi-video</short>
  <description>UniFi Video Controller</description>
  <port port="3478" protocol="udp"/><!-- STUN -->
  <port port="8080" protocol="tcp"/><!-- Device and Controller Communication -->
  <port port="8443" protocol="tcp"/><!-- WebUI -->
  <port port="8880" protocol="tcp"/><!-- HTTP Portal Redirection -->
  <port port="8843" protocol="tcp"/><!-- HTTPS Portal Redirection -->
  <port port="6789" protocol="tcp"/><!-- UniFi Mobile App Speed Test -->
  <port port="10001" protocol="udp"/><!-- Device Discovery -->
  <port port="1900" protocol="udp"/><!-- Layer-2 Device Discovery -->
</service>