Compare the Top Firewall Software in the USA as of October 2026

What is Firewall Software in the USA?

Firewall software is a security tool that monitors and controls incoming and outgoing network traffic based on predetermined security rules. Acting as a barrier between a trusted internal network and untrusted external networks, firewalls help prevent unauthorized access and protect against cyber threats. They work by analyzing data packets and determining whether they should be allowed through based on set policies, blocking potentially harmful traffic. Modern firewalls often incorporate advanced features like intrusion prevention, application filtering, and deep packet inspection to strengthen security further. By providing this critical layer of protection, firewall software safeguards sensitive data and ensures the integrity of networked systems. Compare and read user reviews of the best Firewall software in the USA currently available using the table below. This list is updated regularly.

  • 1
    NextDNS

    NextDNS

    NextDNS

    NextDNS protects you from all kinds of security threats, blocks ads and trackers on websites and in apps and provides a safe and supervised Internet for kids, on all devices and on all networks. Determine your threat model and fine-tune your security strategy by enabling 10+ different types of protections. Use the most trusted threat intelligence feeds containing millions of malicious domains, all updated in real-time. Go beyond the domain, we analyze DNS questions and answers on-the-fly (in a matter of nanoseconds) in order to detect and block malicious behavior. With usually only a few hours between domain registration and the start of an attack, our threat intelligence system is built to catch malicious domains earlier than classic security solutions. Block ads and trackers on websites and in apps, including the most devious ones. Use the most popular ads & trackers blocklists, millions of domains all updated in real-time.
    Starting Price: $39 per month
  • 2
    IPFire

    IPFire

    IPFire

    IPFire is a hardened, versatile, state-of-the-art Open Source firewall based on Linux. Its ease of use, high performance in any scenario, and extensibility make it usable for everyone. Security is the highest priority in IPFire. It is hardened to protect itself from attacks from the Internet and prevents attacks on your network. Its powerful firewall engine and intrusion prevention system protect your network against attacks from the Internet and denial-of-service attacks. IPFire is free software developed by an open community and trusted by hundreds of thousands of users from all around the world. The primary objective of IPFire is security. It's easy to configure a firewall engine and an intrusion prevention system stops any attackers from breaking into your network. In the default configuration, the network is split into various zones with different security policies such as a LAN and DMZ to manage risks inside the network and have a custom configuration for specific needs.
    Starting Price: Free
  • 3
    pfSense

    pfSense

    Netgate

    The pfSense project is a free network firewall distribution, based on the FreeBSD operating system with a custom kernel and including third party free software packages for additional functionality. pfSense software, with the help of the package system, is able to provide the same functionality or more of common commercial firewalls, without any of the artificial limitations. It has successfully replaced every big name commercial firewall you can imagine in numerous installations around the world, including Check Point, Cisco PIX, Cisco ASA, Juniper, Sonicwall, Netgear, Watchguard, Astaro, and more.
  • 4
    OPNsense

    OPNsense

    OPNsense

    Simple packet filters are becoming a thing of the past. Even the open-source domain is moving towards Next-Generation Firewalls. And OPNsense is a top player when it comes to intrusion detection, application control, web filtering, and anti-virus. No network is too insignificant to be spared by an attacker. Even home networks, washing machines, and smartwatches are threatened and require a secure environment. Firewalls are a component of the security concept. They protect against known and new threats to computers and networks. A firewall offers the highest level of protection if its functions are known, its operation is simple, and it is ideally positioned in the surrounding infrastructure. OPNsense accepts the challenge and meets these criteria in different ways. This book is the ideal companion for understanding, installing and setting up an OPNsense firewall.
    Starting Price: Free
  • 5
    VyOS

    VyOS

    VyOS Networks

    VyOS Networks is the global leader in open networking for organizations that need secure, scalable, automated networking across bare metal, cloud, and edge. Designed with flexibility and scalability in mind, VyOS provides an enterprise-grade networking platform for consistent operations and automation at scale, delivering full control and high performance with zero vendor lock-in. Our mission is to restore ownership of network infrastructure to our users through transparent, vendor-neutral networking. VyOS Universal Router provides a single, consistent networking layer across all of them: • Same operating system • Same configuration model • Same CLI and APIs • Same automation workflows • Same operational model across tenants and regions Your network, your rules.
    Starting Price: $7500
  • 6
    CaaB

    CaaB

    CaaB

    CaaB is a simple, powerful cloud platform built specifically for managed service providers, combining high-performance infrastructure with a unified, fully white-label Cloud Web Manager. MSPs can deploy and manage virtual machines, virtual desktops, managed Kubernetes, cloud storage, CDN, cloud backup, dedicated firewalls, load balancers, web application firewall, and disaster recovery from one environment. The Cloud Web Manager provides an easy-to-navigate GUI, full automation and API access, multi-tenant user management, two-factor authentication, and usage reporting, helping partners manage customer cloud services under their own brand. Virtual machines are designed for high performance and easy scaling, with customizable hardware, SSD storage, Linux or Windows operating systems, and rapid deployment. Managed Kubernetes removes the need to install, manage, and operate clusters manually, with automated management, built-in security, portability, etc.
    Starting Price: $101 per month
  • 7
    AP Lens

    AP Lens

    AP Lens

    AP Lens is a Sandbox Browser that isolates networks using DNS Whitelisting. We stop the attack before it reaches the network. What does AP Lens provide? - Web Filtering: Flexible and user-friendly content blocking. - Anti-Phishing: Stop look-alike domains with 100% accuracy. - Ransomware Protection: Isolate the network without affecting business applications. - Secure Remote Work: Enforce internet usage policies without VPN slowness. - No More 0-Day Attacks: Escape the limits of blacklisting with AP Lens Augmented Whitelist. - Compliant: AP Lens meets regulatory requirements requested by cybersecurity insurance policies. - One-Click Installation: No need for a lengthy setup process or updating from the user's side. - No Maintenance: Stop malware and phishing without continuous monitoring. Our team builds on over 20 years of experience in cyber security, cloud security, and information protection in industries such as private banking and the public sector.
    Starting Price: $5
  • 8
    CrowdSec

    CrowdSec

    CrowdSec

    CrowdSec is a free, open-source and collaborative IPS to analyze behaviors, respond to attacks & share signals across the community, outnumbering cybercriminals all together. Set up your own intrusion detection system. Apply behavior scenarios to identify cyber threats. Share and benefit from a crowdsourced and curated cyber threat intelligence system. Define the type of remediation you want to apply and where. Leverage the community’s IP blocklist and automate your security. CrowdSec is designed to run seamlessly on virtual machines, bare-metal servers, containers or to be called directly from your code with our API. Our strength comes from our cybersecurity community that is burning cybercriminals’ anonymity. By sharing IP addresses that aggressed you, you help us curate and redistribute a qualified IP blocklist to protect everyone. CrowdSec is 60x faster than tools like Fail2ban and can parse massive amounts of logs in no time.
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