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Understanding the Differences Among Linux Firewall Tools: ufw, firewalld, and iptables Firewalls are the unsung heroes of network security, safeguarding systems from unauthorized access and attacks. In the Linux ecosystem, several tools help administrators and users configure the underlying netfilter framework to manage network traffic effectively. The most prominent among these tools are iptables, ufw (Uncomplicated Firewall), and firewalld. Each tool has its unique features and operational logic, catering to different user requirements and expertise levels. In this post, we will explore the differences between these tools to help you choose the right firewall for your needs.