[ TITLE    ] : Manage Firewalld

TIPS & TRICKSTo search the contents of the man pages # man -k searchterm # man -K searchterm Manage FirewallMaybe very hard to memorize, so, if needed : # firewall-cmd -h | grep <pattern># firewall-cmd --<TAB> Then ALREADY RELOAD THE CONFIG for APPLY CHANGES: # firewall-cmd --reload Manage Firewall Example 1| Refuse domain 172.25.0.0/16 to access the server. # firewall-cmd --zone=block --add-source=172.25.0.0/16 --permanent# firewall-cmd --reload Manage Firewall Example 2| Rem