firewall-cmd

Description firewall-cmd is the command line client of the firewalld daemon. It provides an interface to manage the runtime and permanent configurations. The runtime configuration in firewalld is separated from the permanent configuration. This means that things can get changed in the runtime or permanent configuration. Options Sequence options are the options that can be specified multiple times,

[Itisango]

“--state Check whether the firewalld daemon is active (i.e. running). Returns an exit code 0 if it is active, RUNNING_BUT_FAILED if failure occurred on startup, NOT_RUNNING otherwise. See the section called “Exit Codes”. This will also print the state to STDOUT.”