How to secure my firewall

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How to Secure a Linux Firewall With IPTables Rules

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Server hacking and unauthorized access are genuine threats. These reasons are why you should implement a firewall as part of your overall network security strategy. Configuring a firewall with iptables rules is one way to mitigate such risks on Linux systems.

Simplify Your Firewall Setup

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Canonical's ufw lets you configure your firewall without the hassle of the iptables tool, while reducing the risk of misconfiguration and simplifying maintenance.

How to configure firewalld rules in Linux

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Learn how to add, remove, enable, and disable firewalld rules & zones in this guide. The firewall is essential for controlling the flow of network traffic in and out of the Linux server. It enables users to control incoming network traffic on host machines by defining a set of firewall rules. It must be enabled on production servers facing the Internet, to protect those servers from unauthorized access. This is one of those security features that ensures your system security at network level.