firewalld

Spec sheet

Purpose

firewalld is a dynamically managed, stateful, zone-based firewall that organizes network traffic by trust level.Read 10 Oct 2026 · firewalld.org

Supported platforms

linuxRead 22 Sep 2026 · firewalld.org

Free plan

YesRead 22 Sep 2026 · firewalld.org

Integrations

The project lists NetworkManager, libvirt, podman, Docker using the iptables backend, fail2ban, and Puppet among supported integrations.Read 10 Oct 2026 · firewalld.org

Support

The firewalld-users mailing list is described as a place to get help from upstream developers and community members, and GitHub is the preferred place to file issues.Read 10 Oct 2026 · firewalld.org

License

The project states that firewalld is licensed under GPLv2.Read 10 Oct 2026 · firewalld.org

Interfaces

firewalld provides a D-Bus API, command-line tools for online and offline configuration, a GTK3 graphical configuration tool, and a Qt5 applet.Read 10 Oct 2026 · firewalld.org

Linux distributions

The project lists firewalld as the default firewall management tool in RHEL 7 and newer, CentOS 7 and newer, Fedora 18 and newer, SUSE 15 and newer, and openSUSE 15 and newer.Read 10 Oct 2026 · firewalld.org

NAT and policies

Policies can filter input, forwarded, and output traffic and perform network address translation.Read 10 Oct 2026 · firewalld.org

Network support

It supports IPv4, IPv6, Ethernet bridges, and IPSet firewall settings.Read 10 Oct 2026 · firewalld.org

NetworkManager dependency

firewalld does not depend on NetworkManager, but without it the daemon may not learn about device renames or bind already active connections and manually created interfaces to zones at startup.Read 10 Oct 2026 · firewalld.org

Outbound control

advancedRead 22 Sep 2026 · firewalld.org

Persistent configuration

Runtime and permanent configurations are separate, and runtime-only changes do not persist after a reload or restart.Read 10 Oct 2026 · firewalld.org

Rule direction

bothRead 22 Sep 2026 · firewalld.org

Rule management

Features include rich rules, timed rules, port forwarding, masquerading, ICMP filtering, and logging of denied packets.Read 10 Oct 2026 · firewalld.org

Runtime changes

Runtime firewall changes take effect without restarting the service or daemon.Read 10 Oct 2026 · firewalld.org

Security control

Lockdown mode can whitelist applications that are allowed to modify the firewall.Read 10 Oct 2026 · firewalld.org

Plans and prices

Every firewalld plan and price →

Where Specifiction places it

• Firewall Software#25 of 768.1