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.
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