Top 9 Best Free and Open Source Firewall Software For Windows and linux

A Software based Firewall is designed to block any unwanted traffic between computers on a network.

PFSENSE

pfSense – World’s Most Trusted Open Source Firewall. pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more.

OPNSENSE

OPNsense you next open source firewall. Free Download. High-end Security Made Easy. Offers Intrusion Prevention, Captive Portal, Traffic Shaping and more.

ENDIAN

Endian – Secure everyThing: Firewall, UTM, Hotspot, VPN, Industrial IoT. Endian offers Firewalls, Unified Threat Management, WiFi & BYOD Hotspot, IoT Security, Secure Remote Connectivity and Industrial Security Appliances.

SMOOTHWALL

The Smoothwall Open Source Project was set up in 2000 to develop and maintain Smoothwall Express – a Free firewall that includes its own security-hardened GNU/Linux operating system and an easy-to-use web interface.

IPFIRE

IPFire, the professional and hardened Linux firewall distribution that is secure, easy to operate and coming with great functionality so that it is ready for enterprises, authorities, and anybody else.

IPCOP

The IPCop Firewall is a Linux firewall distribution. It is geared towards home and SOHO users. The IPCop web-interface is very user-friendly and makes usage easy.

TINYWALL

TinyWall is a free, feature-rich, and lightweight firewall for Windows, known for its unique no-popup approach.

SIMPLEWALLSOFTWARE

Free Software Firewall & UTM. Simplewall is an easy to use firewall & content filter for small and mid-sized business to stay in full control of your business network.

FILSECLAB

Filseclab Personal Firewall Professional Edition is one of the most important software of Filseclab, it is very easy to use and also very powerful. It can provide more secure protection for your PC, and it is FREE.