Best Firewall Software for Windows

ThreatLocker is a Zero Trust Platform that prevents cyber threats by blocking unknown applications, enforcing least privilege, and controlling what can run across your environment. Using Allowlisting, Ringfencing, Network Control, and more, ThreatLocker stops ransomware, zero-day attacks, and unauthorized activity before execution, rather than relying on detection after the fact. Built for modern IT and cybersecurity teams, the platform delivers centralized visibility and policy management across endpoints, users, and applications. ThreatLocker reduces attack surface, limits lateral movement, and supports compliance with detailed audit logs. With fast deployment, a large built-in application library, and streamlined approvals, organizations can strengthen security while minimizing operational overhead and maintaining business continuity.

Instantly see who or what your PC is talking to on GlassWire's network monitoring graph, plus see what your PC may have connected to in the past. Detect spyware, malware, badly behaving apps, and bandwidth hogs, then block their connections. Monitor other PCs on your network and get alerted when new unknown devices join your WiFi. GlassWire warns you of network related changes to your PC, or unusual changes to your apps that could indicate malware. GlassWire offer a Consumer Solution and a Business solution, to suit the needs of both personal users and IT professionals. Among the features: Real-Time Monitoring to keep an eye on active and past network activity Threat. Threat Detection. GlassWire's built-in firewall detects and blocks potential threats. Application Tracking to Identify which applications are using your network and track their usage patterns. Bandwidth Usage, to stay informed about data consumption, And many more!

Multilayered endpoint security with behavior based analysis for prevention against known and unknown threats. Complete real-time visibility of all your global software inventory. Here, there, anywhere. Cloud-delivered FortiClient endpoint protection service designed for small and medium-sized business. Integrated endpoint protection platform that provides automated next-generation threat protection, visibility and control of your software and hardware inventory across the entire security fabric. Identify & remediate vulnerable or compromised hosts across your attack surface. As a key piece of the Fortinet Security Fabric, FortiClient integrates endpoints into the fabric for early detection and prevention of advanced threats. Security events including zero-day malware, botnet detections, and vulnerabilities are reported in real-time.

Avast Small Business Solutions deliver next-gen endpoint protection for business Windows PCs, Mac, and Windows servers that you can manage anywhere via a web browser. Our robust, easy-to-use security for devices, data, and applications is designed to keep small organizations and their employees safer online. Avast antivirus with multiple layers of security, online privacy, and remote-control features provides powerful cybersecurity controlled via a cloud-based management console. Avast Small Business Solutions are managed via cloud-based management console Avast Business Hub and consist of: * Avast Essential Business Security   * Avast Premium Business Security - combines our next-gen antivirus with VPN and USB control) * Avast Ultimate Business Security - award-winning next-gen antivirus with online privacy tools and patch management automation software

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.

ZoneAlarm for Business offers comprehensive, advanced, and flexible solutions for unmanaged businesses such as small businesses, Telco’s, government municipalities, and other businesses with little to no IT resources. With its easy deployment and maintenance, ZoneAlarm for Business offers you Check Point’s vigorous multi-platform protection and support, made simple. ZoneAlarm Extreme Security NextGen is the comprehensive, ultimate PC and mobile security solution for all your business security needs, using Check Point’s cutting-edge enterprise-grade technology. Next-gen antivirus with award-winning Anti-Ransomware, advanced phishing protection, and secure browsing experience. Our advanced cyber security solutions use business-class protection to secure millions of home users’ PCs and mobile devices against the latest worldwide cyber threats. This powerful weapon is extremely effective at spotting malicious files and cyberattacks that evade traditional antiviruses.

Comodo Advanced Endpoint Protection provides a state-of-the-art anti-malware suite that proactively protects your servers, workstations, laptops and netbooks while offering advanced, real-time management and control over critical system resources. Whether deployed as a complete security suite or by using the sandbox as a standalone to fortify existing AV solutions, Comodo ESM offers unrivaled endpoint protection for Microsoft Windows servers, desktops, laptops and tablets. The full Comodo Endpoint Security suite brings 5 layers of defense (Antivirus, Firewall, Host Intrusion Prevention, Auto-Sandbox & File Reputation) to the point of impact - the desktop environment. Its ground-breaking auto-sandbox technology eliminates malware outbreaks and operating system contamination by automatically running untrusted processes in an isolated environment. This makes Comodo's endpoint protection the only managed anti-malware solution that can offer a $5,000 limited warranty against infection.

WAPPLES SA (software appliance) is a virtual web application firewall (WAF) that can be seamlessly integrated with cloud systems and other virtual environments. It is a great solution for enterprise customers such as data centers and hosting providers as well as SMBs such as managed security service providers and private cloud business infrastructures. WAPPLES SA has support for popular hypervisors including KVM, Citrix Hypervisor, and vSphere Hypervisor. WAPPLES SA (Software Appliance) generally provides all the capabilities of the hardware WAPPLES appliance with the added ability to scale as your business grows. Based on the same award-winning WAPPLES technology, WAPPLES SA can detect and block known, modified, and zero-day attacks with its Contents Classification and Evaluation Processing (COCEP™) engine.

Detect threats, block viruses and secure VPN with the firewall built for SMB. Configure your firewall with easy-to-use traffic rules, controlling in- and outbound communications by URL, application, traffic type and more. Intrusion detection and prevention using the Snort system constantly monitors inbound and outbound network communications for suspicious activity. Log or block the communications depending on the severity. Prevent viruses, worms, Trojans and spyware from entering your network. Kerio Control goes beyond just checking files for malicious code; it scans your network traffic for potential attacks. Create secure, high-performance server-to-server connections between your offices running Kerio Control with an easy-to-setup VPN technology. Or, you can create a secure VPN connection to a remote office that doesn’t have Kerio Control deployed, using industry-standard VPN protocols.