Table of Contents Table of Contents Title and Copyright Information Preface Documentation License Conventions Documentation Accessibility Access to Oracle Support for Accessibility Diversity and Inclusion 1 Configuring a Packet Filtering Firewall About Packet-Filtering Firewalls Firewall Configuration Tools Controlling the Firewall Service About Zones and Services Displaying Information About Zones Displaying Zone Settings Configuring firewalld Zones Controlling Access to Services Controlling Access to Ports Assigning a Network Interface to a Zone Changing the Default Zone Setting a Default Rule for Controlling Incoming Traffic Managing Incoming Traffic Based on Sources Creating Customized Zones for Firewall Implementation Using the firewall-cmd Command Using a Zone Configuration File 2 Using the nftables Framework Converting iptables to nftables