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firewalld: zone-based firewall daemon

Upstream source of firewalld, the default firewall manager on RHEL, Rocky Linux, AlmaLinux and Fedora, including firewall-cmd and its service definitions.

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Edit history of firewalld: zone-based firewall daemon: 1 recorded edit
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Repo
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1
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1
First issued
15 Oct 2026
Last edit
15 Oct 2026
Source
firewalld/firewalld
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firewalld/firewalld

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308
Language
Python
Licence
GPL-2.0
Last push
8 Oct 2026

On GitHub: Stateful zone based firewall daemon with D-Bus interface

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firewalld manages the kernel packet filter through zones, predefined services and a D-Bus API, and separates runtime from permanent configuration. Its command-line client is firewall-cmd; graphical and web consoles use the same API.

The repository is handy when you want to see exactly which ports a predefined service such as https or postgresql opens (the XML files under config/services/), to read the documentation sources, or to check the issue tracker and release notes. Install firewalld from your distribution’s packages rather than from source.

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See also

  • 0103 Proxmox VE networking: Linux bridges (vmbr0) and VLANs Guests reach the network through Linux bridges such as vmbr0, defined in /etc/network/interfaces. Learn the default setup, VLAN-aware bridges, VLAN tags for… Intermediate · Step by step · Linux Article Installation & first steps · Networking & firewalls 15 Oct 2026
  • 0167 Fix: Job for nginx.service failed because the control process exited with error code systemctl prints this when a service's start command exits with an error. The real reason is in journalctl; for nginx it is… Intermediate · Fixes an error · Linux Article Networking & firewalls · Services & systemd 15 Oct 2026
  • 0173 Set a static IP address: nmcli on RHEL vs netplan on Ubuntu RHEL, Rocky and AlmaLinux configure networking with NetworkManager (nmcli); Ubuntu Server uses netplan YAML. Here is the same static IP setup in… Intermediate · Step by step · Linux Article Networking & firewalls 15 Oct 2026
  • 0174 Network and DNS troubleshooting commands: ip, ss, dig, resolvectl A layer-by-layer cheat sheet for "the server cannot reach X": interfaces and routes with ip, listening ports with ss, and name resolution… Beginner · Cheat sheet · Linux Article Networking & firewalls 15 Oct 2026
  • 0175 Open ports with firewalld and ufw firewalld (RHEL, Rocky, AlmaLinux) and ufw (Ubuntu) are friendly front ends to the kernel firewall. Allow SSH first, then open only the… Intermediate · Step by step · Linux Article Networking & firewalls 15 Oct 2026
  • 0249 Set up and harden a fresh Linux server in one afternoon Take a new Ubuntu, Debian or Rocky/Alma server from first login to a safer baseline: sudo admin, SSH keys only, firewall, automatic… Beginner · Guided project · Linux Article Networking & firewalls · Packages & updates · Users, sudo & hardening 15 Oct 2026

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  1. Dominik +556 chars

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