====== Firewalld ======

===== List Active Rules =====

****

  sudo firewall-cmd --list-all

===== List Available Services =====

****

  sudo firewall-cmd --get-services

===== Show Service Info =====

  * Change ''x'' to name of a service from above
  * This shows what ports and protocols a service covers

  sudo firewall-cmd --info-service=x

===== Reload =====

****

  sudo firewall-cmd --reload

===== Add/Remove Service =====

  * Add ''--permanent'' as-needed to allow the rule to persist

  sudo firewall-cmd --add-service=x

  sudo firewall-cmd --remove-service=x

===== Add/Remove Port =====

  * Add ''--permanent'' as-needed to allow the rule to persist
  * Change ''tcp'' to ''udp'' as-needed

  sudo firewall-cmd --add-port=x/tcp

  sudo firewall-cmd --remove-port=x/tcp