The 18 Best Firewalls in 2026

Modular next-gen firewall platform, now part of Arista's Edge Threat Management.

Self-hosted WAF and reverse proxy for web app protection

Next-generation firewall appliances with real-time deep packet inspection for businesses of all sizes.

Free, open-source Linux firewall distribution with intrusion prevention and built-in VPN.

Open-source, FreeBSD-based firewall and routing platform with a free core and paid Business Edition.

Secure, fast internet and SaaS access for any user, any device.

Integrated IT and OT security gateway platform for business and industrial networks.

Next-generation firewall appliances with AI-powered threat protection and zero trust access.

Centralized management for Palo Alto firewalls and Prisma Access.

Open-source firewall, router, and VPN platform trusted by enterprises for network security.

AI-powered firewall and antivirus suite from Check Point for Windows, Mac, and mobile.

Interactive application firewall for GNU/Linux

Next-generation firewall with synchronized security and AI-powered threat detection for SMBs and enterprises.

Unified security gateway with threat prevention and zero‑trust controls

Cloud‑delivered DNS security that blocks threats before they reach users

Free, open-source firewall for macOS that blocks unauthorized outgoing connections.

Free, open-source application firewall with system-wide tracker and ad blocking

See and control every outgoing connection on your Mac with this application firewall.