Enhancing Firewall Management with Firewall-cmd: Uncovering the Benefits of Listing Your Firewall Rules

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    Enhancing Firewall Management with Firewall-cmd: Uncovering the Benefits of Listing Your Firewall Rules


    Firewalls are an essential component of any computer network, working as a barricade against unauthorized access and potential security threats. Managing firewall rules efficiently is crucial for ensuring a secure network environment. In this article, we will discuss how using Firewall-cmd can enhance your firewall management experience, specifically by uncovering the benefits of listing your firewall rules.

    Understanding Firewall-cmd

    Firewall-cmd is a command-line utility that provides a convenient interface for managing firewalls in Linux-based systems using the Netfilter framework. It is the default tool for managing firewalls on modern Linux distributions, such as CentOS, Fedora, and Red Hat Enterprise Linux (RHEL). With Firewall-cmd, you can easily configure and modify firewall rules, zones, services, and port forwarding.

    Importance of Listing Firewall Rules

    Listing your firewall rules using Firewall-cmd offers several significant benefits.

    1. Improved Understanding of Firewall Configuration

    By listing your firewall rules, you gain a comprehensive view of the firewall configuration. It allows you to understand which ports and services are open, which zones are active, and which rules are applied. With this knowledge, you can better assess the overall security of your network and identify any potential vulnerabilities.

    2. Enhanced Troubleshooting

    When troubleshooting network connectivity issues, having a clear overview of the firewall rules can be immensely helpful. By listing the rules, you can easily identify whether certain ports or services are being blocked, and quickly modify the rules to allow access if necessary. This ability saves precious time and simplifies the debugging process.

    3. Simplified Rule Modification and Deletion

    Listing firewall rules makes it effortless to modify or delete existing rules. When you list the rules, you can see them in a structured format, allowing you to easily locate the specific rule you want to modify or remove. This capability streamlines the workflow and reduces the chances of accidental rule modifications or deletions.

    How to List Firewall Rules with Firewall-cmd

    Listed below are the steps to list firewall rules using Firewall-cmd:

    Step 1: Open Terminal

    Launch the terminal on your Linux system to access the command-line interface.

    Step 2: Execute Firewall-cmd Command

    Type the following command to list all the firewall rules:

    firewall-cmd --list-all

    This command will display the complete configuration of your firewall, including zones, services, ports, and rules.

    Step 3 [Optional]: Filter Firewall Rules

    If you want to filter the firewall rules based on specific criteria, you can use additional options with the firewall-cmd command. For example, to display only the rules related to a particular zone, execute the following command:

    firewall-cmd --zone=public --list-all

    This command will list all the rules specific to the “public” zone.

    List Firewall Rules Example

    Here is an example output of the firewall-cmd command listing firewall rules:

    public (active)
    target: default
    icmp-block-inversion: no
    interfaces: ens33
    services: dhcpv6-client http https ssh
    masquerade: no
    rich rules:

    From this output, you can see that the “public” zone is active, and services like DHCPv6-client, HTTP, HTTPS, and SSH are allowed.


    Listing firewall rules using Firewall-cmd is an invaluable technique for efficient firewall management. It allows for a comprehensive understanding of firewall configuration, simplifies troubleshooting, and eases rule modification or deletion. By gaining visibility into your firewall rules, you can ensure a more secure and reliable network environment. Start leveraging Firewall-cmd and take advantage of its features to enhance your firewall management experience.