How To Use Firewalld Rich Rules And Zones For Filtering And NAT

Here we cover the RHCE exam objective “Use firewalld and associated mechanisms such as rich rules, zones and custom rules, to implement packet filtering and configure network address translation (NAT)” in Red Hat Enterprise Linux (RHEL) 7. Continue reading


Useful ‘FirewallD’ Rules to Configure and Manage Firewall in Linux

Firewalld provides a way to configure
dynamic firewall rules in Linux that can be applied instantly, without
the need of firewall restart and also it support D-BUS and zone
concepts which makes configuration easy.

Introduction to FirewallD on CentOS

FirewallD is frontend controller for iptables used to implement persistent network traffic rules. It provides command line and graphical interfaces and is available in the repositories of most Linux distributions. Working with FirewallD has two main differences compared to directly controlling iptables: Continue reading