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Feb 18, 2022
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Adding link and explanation sentence #571

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4 changes: 3 additions & 1 deletion docs/guides/security/firewalld.md
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Expand Up @@ -17,6 +17,8 @@ From the manual page: "`firewalld` provides a dynamically managed firewall with

Fun fact: `firewalld` is actually a front end to the netfilter and nftables Kernel sub-systems in Rocky Linux.

This guide focuses on applying rules from an `iptables` firewall to a `firewalld` firewall. If you are really at the beginning of your firewall journey, [this document](firewalld-beginners.md) might help you more. Consider reading through both documents to get the most out of `firewalld`.

## Prerequisites and Assumptions

* Throughout this document, we assume that you are either the root user or have used `sudo` to become so
Expand Down Expand Up @@ -122,7 +124,7 @@ You can list out the active zones on your system by using this command:
!!! Note "Important: Active Zones"

A zone can *only* be in an active state if it has one of these two conditions:

1. The zone is assigned to a network interface
2. The zone is assigned source IPs or network ranges.

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