Best Firewall Software in 2026 · page 3

Advanced Policy Firewall

Advanced Policy Firewall (APF) is a free firewall system for Internet-deployed Linux servers, built on iptables/netfilter.

Nutanix Flow Virtual Networking

Nutanix Flow Virtual Networking is software-defined networking for creating and managing virtual private clouds (VPCs) in software.

Tufin

Tufin provides a unified control plane for network visibility, security policy management, automated change control, and continuous compliance across hybrid networks.

AlgoSec

pfSense

Windows Security

Windows Security is a free security app built into Windows 10 and Windows 11.

IPFW

Evorim Free Firewall

Firewall App Blocker

ferm

Cloudflare Magic Firewall

Cloudflare Magic Firewall, now listed as Cloudflare Network Firewall, is a firewall-as-a-service for filtering unwanted traffic before it reaches…

Malwarebytes Windows Firewall Control

WinSight

Cisco Catalyst Center

Cisco Catalyst Center is a centralized controller and management dashboard for enterprise network operations.

Zentyal Server

OpenBSD PF

LuLu

LuLu is a free, open-source firewall for macOS that alerts about and blocks unknown outgoing network connections.

FireHOL

Arno's IPTABLES Firewall

EndianOS

NetLimiter

NetLimiter is paid Windows software for monitoring internet traffic and controlling bandwidth.

Vuurmuur

ServiceNow Firewall Audits and Reporting

Gufw

Gufw is a graphical interface for Ubuntu's Uncomplicated Firewall, or UFW.

RedSeal

RedSeal is an AI-enabled exposure-management platform for reducing cyber risk across hybrid IT, cloud, OT, IoT, and remote environments.