² FIREWALL firewall-cmd #
sudo firewall-cmd --help | grep list
--list-all # list everything added for or enabled [P] [Z] [O]
--list-all-zones # list everything added for or enabled in all zones [P]
--list-all-policies # list everything added for or enabled in all policies
--list-services # list services added [P] [Z]
--list-ports # list ports added [P] [Z] [O]
--list-protocols # list protocols added [P] [Z] [O]
--list-source-ports # list source ports added [P] [Z] [O]
--list-forward-ports # list IPv4 forward ports added [P] [Z] [O]
--list-rich-rules # list rich language rules added [P] [Z] [O]
--list-interfaces # list interfaces bound to a zone [P] [Z]
--list-sources # list sources bound to a zone [P] [Z]
sudo firewall-cmd --list-all-zones | grep -A19 pub
#=> public (default, active)
#=> target: default
#=> interfaces: wlp2s0b1
#=> icmp-block-inversion: no
sudo firewall-cmd --list-all-zones | grep active
#=> docker (active)
#=> public (default, active)
--list-services
--add-service= whether service was added [P] [Z] [O]
--list-ports ports added [P] [Z] [O]
--add-port=PORTID[-<PORTID>]/PROTOCOL whether the port has been added [P] [Z] [O]
--list-protocols List protocols added [P] [Z] [O]
--add-protocol=PROTOCOL
RELOAD!! #
firewall-cmd --reload