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You could configure these manually or install an additional utility that reveals the service’s full functionalities, simplified configurations and enables point-and-click setup. Linux firewall utilities sit on top of pre-built firewall services such as Netfilter, UFW, FirewallD, iptables, etc.

Therefore, you can have two types of Linux firewall: 1. Most Linux distributions, including Debian, Ubuntu, CentOS, etc., ship with pre-built firewall services of their own (much like Microsoft Windows has Windows Defender firewall turned on by default).

Top 10 Linux Firewall Solutions in 2021Ī Linux firewall is a solution or service that regulates, protects, and blocks network traffic as it passes to and from a Linux-based environment.

Key Must-have Features for Linux Firewalls.

Let’s understand the basics of a Linux firewall and look at the best products in the market in 2021. Given that nearly 75% of the world’s servers run on Linux, these solutions are essential to provide secure access to users and end customers.

A Linux firewall is defined as a solution or service that regulates, protects, and blocks network traffic as it passes to and from a Linux-based environment.