Best Firewall Software
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Compare the Top Firewall Software as of December 2025
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What is Firewall Software?
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 currently available using the table below. This list is updated regularly.
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1
ThreatLocker
ThreatLocker
The ThreatLocker suite of security tools are powerful and designed so that everyone from businesses to government agencies to academic institutions can directly control exactly what applications run on their networks. We envision a future in which all organizations can chart their own course free from the influence of cybercriminals and the damage their incursions cause, and our team of veteran cybersecurity professionals created ThreatLocker to make this vision a reality. The team at ThreatLocker has been developing cybersecurity tools for decades, including programs to enhance email and content security, and this is our most innovative and ambitious cybersecurity solution yet. We developed this unique cybersecurity system because we believe that organizations should have complete control of their networks and should not have to live in fear of the next malware attack. To learn more, visit ThreatLocker.com. -
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Cloudflare
Cloudflare
Cloudflare is the foundation for your infrastructure, applications, and teams. Cloudflare secures and ensures the reliability of your external-facing resources such as websites, APIs, and applications. It protects your internal resources such as behind-the-firewall applications, teams, and devices. And it is your platform for developing globally scalable applications. Your website, APIs, and applications are your key channels for doing business with your customers and suppliers. As more and more shift online, ensuring these resources are secure, performant and reliable is a business imperative. Cloudflare for Infrastructure is a complete solution to enable this for anything connected to the Internet. Behind-the-firewall applications and devices are foundational to the work of your internal teams. The recent surge in remote work is testing the limits of many organizations’ VPN and other hardware solutions.Starting Price: $20 per website -
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GlassWire
GlassWire
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!Starting Price: $35.88/year/user -
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Cisco Meraki
Cisco
Network security is hard. Current solutions are complex and tedious to implement. Learn how to simplify security with Cisco Meraki! Trusted by influential brands around the world. With over a million active networks and counting, organizations far and wide count on Meraki to help deliver premium, reliable experiences. All Cisco Meraki devices are centrally and securely managed from the cloud using a single web-based dashboard. Our feature-rich, intuitive architecture enables customers to save time, reduce operating costs, and solve new business problems. The industry standard for easy-to-manage, fast and dependable Wi-Fi. Protect and securely connect what matters most, regardless of location. Uncompromising performance and reliability at the heart of your network. Remote monitoring and identity-based configuration for all your devices.Starting Price: $40.00 -
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Zscaler
Zscaler
Zscaler, creator of the Zero Trust Exchange platform, uses the largest security cloud on the planet to make doing business and navigating change a simpler, faster, and more productive experience. The Zscaler Zero Trust Exchange enables fast, secure connections and allows your employees to work from anywhere using the internet as the corporate network. Based on the zero trust principle of least-privileged access, it provides comprehensive security using context-based identity and policy enforcement. The Zero Trust Exchange operates across 150 data centers worldwide, ensuring that the service is close to your users, co-located with the cloud providers and applications they are accessing, such as Microsoft 365 and AWS. It guarantees the shortest path between your users and their destinations, providing comprehensive security and an amazing user experience. Use our free service, Internet Threat Exposure Analysis. It’s fast, safe, and confidential. -
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FortiClient
Fortinet
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. -
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WatchGuard Network Security
WatchGuard Technologies
Our products provide your security systems with complete, uncompromising visibility into your network. You will find that this helps to keep pace with increasing network speed and complexity, while gaining the insight needed to better detect and contain breaches, and achieve a rapid recovery. By implementing Network Critical solutions you can improve your existing security system's network performance, therefore increasing your ROI. Firstly, SPAN ports. These have been a long-term, insufficient, solution to network security. It is remarkably easy for hackers to infiltrate routers, switches and entire networks without detection. SPAN does not provide access to real-time information either, which is another key issue that may greatly affect your network's security. This is because SPAN ports groom your data, unlike Network TAPs, that act as a window, where you can look through at any time, in real-time. -
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Avast Small Business Solutions
Avast Business
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 softwareStarting Price: $39.99/device/year -
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Barracuda CloudGen Firewall
Barracuda
Get comprehensive protection for on-premises and multi-cloud deployment using the firewall built in and for the cloud. Frictionless, cloud-hosted Advanced Threat Protection detects and blocks advanced threats, including zero-day and ransomware attacks. Gain rapid protection against the newest threats with the help of a global threat intelligence network fed by millions of data collection points. Modern cyber threats such as ransomware and advanced persistent threats, targeted attacks, and zero-day threats, require progressively sophisticated defense techniques that balance accurate threat detection with fast response times. Barracuda CloudGen Firewall offers a comprehensive set of next-generation firewall technologies to ensure real-time network protection against a broad range of network threats, vulnerabilities, and exploits, including SQL injections, cross-site scripting, denial of service attacks, trojans, viruses, worms, spyware, and many more. -
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Arista NG Firewall
Arista Networks
Arista NG Firewall is a modular, software-based network security platform designed to simplify protection and visibility for organizations with limited IT resources. It offers a browser-based, intuitive interface that provides real-time insights into network traffic and user behavior. The firewall proactively blocks malware, phishing, spam, and hacking attempts to safeguard devices and data. With features like content filtering, application shaping, VPN connectivity, and QoS management, it balances security with network performance. The platform integrates with ETM Dashboard for centralized network orchestration and remote management. Flexible deployment options include dedicated hardware, virtual machines, and cloud environments like AWS and Azure. -
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Check Point CloudGuard
Check Point Software Technologies
The Check Point CloudGuard platform provides you cloud native security, with advanced threat prevention for all your assets and workloads – in your public, private, hybrid or multi-cloud environment – providing you unified security to automate security everywhere. Prevention First Email Security: Stop zero-day attacks. Remain ahead of attackers with unparalleled global threat intel. Leverage the power of layered email security. Native Solution, at the Speed of Your Business: Fast, straightforward deployment of invisible inline API based prevention. Unified Solution for Cloud Email & Office Suites: Granular insights and clear reporting with a single dashboard and license fee across mailboxes and enterprise apps. Check Point CloudGuard provides cloud native security for all your assets and workloads, across multi-clouds, allowing you to automate security everywhere, with unified threat prevention and posture management. -
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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. -
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Forcepoint NGFW
Forcepoint
The Forcepoint Next Generation Firewall has multiple layers of defenses that protect your network, your endpoints, and your users against modern, advanced threats. Ability to manage large quantities of firewalls and fleets of firewalls at scale without compromising performance. Ease of management, the granularity of controls, and scalability of management capabilities. Assessed block rate, IP Packet Fragmentation/TCP Segmentation, false-positive testing, stability, and reliability. Assessed ability to protect against evasions, HTTP evasions, and a combination of evasion techniques. Designed like software, rather than hardware, NGFW gives you the flexibility to deploy on hardware, virtually or in the cloud. Open API's let you customize automation and orchestrations to your own specifications. Our products routinely undergo rigorous certification testing to meet the most stringent needs of sensitive and critical industries, agencies, organizations and governments around the world. -
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DDoS attacks saturate bandwidth, consume network resources, and disrupt application services. Can your infrastructure successfully fend them off? Advanced Firewall Manager mitigates network threats before they disrupt critical data center resources. Unifies application configuration with network security policy for tighter enforcement. Identifies and mitigates network, protocol, DNS threats, before they reach critical data center resources. Supports SNMP, SIP, DNS, IPFIX collectors, and protects log servers from being overwhelmed. Protects data center resources with purpose-built defenses augmented by F5 threat data. Understand traffic patterns into the data center with customizable reports and analytics. Mitigate sophisticated zero-day threats or gather critical forensics using F5 iRules. Defends your network infrastructure and mobile subscribers from attacks such as DDoS.
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ZoneAlarm Extreme Security NextGen
Check Point
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.Starting Price: $44.95 per year -
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Comodo Endpoint Security Manager
Comodo Group
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.Starting Price: $4.00/one-time/user -
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Sophos UTM
Sophos
Sophos UTM drives threat prevention to unmatched levels. The artificial intelligence built into Sophos Sandstorm is a deep learning neural network, an advanced form of machine learning, that detects both known and unknown malware without relying on signatures. Sophos UTM 9.4 is one of the first Sophos products to offer our advanced next-gen cloud sandboxing technology. Sandstorm provides a whole new level of ransomware and targeted attack protection, visibility, and analysis. It can quickly and accurately identify evasive threats before they enter your network. And, it’s tremendous value: it’s enterprise-grade protection without the enterprise-grade price-tag or complexity. Harden your web servers and Microsoft Enterprise Applications against hacking attempts while providing secure access to external users with reverse proxy authentication. Full SMTP and POP message protection from spam, phishing and data loss with our unique all-in-one protection. -
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Azure Firewall
Microsoft
Azure Firewall is a managed, cloud-based network security service that protects your Azure Virtual Network resources. It's a fully stateful firewall as a service with built-in high availability and unrestricted cloud scalability. Azure Firewall is a managed, cloud-based network security service that protects your Azure Virtual Network resources. The stateful firewall service has built-in high availability and unrestricted cloud scalability to help you create, enforce, and log application and network connectivity policies across subscriptions and virtual networks. Simplify deployment and management of your network security with a scalable and highly available cloud native firewall. Centrally manage security across all virtual networks with a common set of network and application rules. -
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WAPPLES SA
Penta Security Systems, Inc.
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. -
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Google Cloud Firewalls
Google
Google Cloud firewalls are fully embedded in the cloud networking fabric, highly scalable, and granular to meet your enterprise’s unique security needs. Flexible and customizable: Benefit from protection at the organization, folder, and project level with flexible control over firewall rules and policies. Visibility and optimization: Gain insights into firewall rule usage and optimization opportunities to help you keep your deployment safe and easy to manage. Granular controls: Leverage network tags and service accounts to define granular control for both north-south and east-west traffic. -
21
Kerio Control
GFI Software
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.Starting Price: $270 per year -
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SonicWall Next Generation Firewall
SonicWall
Advanced threat protection, from small businesses to global enterprises and cloud environments. Discover network security made boundless. Whether you’re a small business or a large enterprise, whether in your home or in the cloud, SonicWall next-generation firewalls (NGFW) provide the security, control and visibility you need to maintain an effective cybersecurity posture. SonicWall’s award-winning hardware and advanced technology are built into each firewall to give you the edge on evolving threats. With solutions designed for networks of all sizes, SonicWall firewalls are designed to meet your specific security and usability needs, all at a cost that will protect your budget while securing your network. The SonicWall NSv Series virtual firewall offers you all the security advantages of a physical firewall with the operational and economic benefits of virtualization, including system scalability and agility, speed of system provisioning, simple management and cost reduction. -
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Smoothwall Firewall
Smoothwall
Smoothwall Firewall features anti-malware protection, HTTPS inspection, anonymous proxy detection & blocking, and intrusion detection & prevention, to provide you with a complete all-in-one protection package. Combines with Smoothwall Filter for a complete all in one protection package. Can be purchased independently or combined to offer a unified threat management solution. Combines Layer 7 application control with perimeter firewall and stateful packet inspection to provide Next-Generation firewall functionality. Smoothwall is an eligible firewall service provider for Category 2 E-Rate funding. Combines with Smoothwall Filter - the only fully content-aware web filter in US education. You can choose which Filter deployment method works for you. Our US-based customer support team are education specialists and available to help whenever you need them. -
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AWS WAF
Amazon
AWS WAF is a web application firewall that helps protect your web applications or APIs against common web exploits that may affect availability, compromise security, or consume excessive resources. AWS WAF gives you control over how traffic reaches your applications by enabling you to create security rules that block common attack patterns, such as SQL injection or cross-site scripting, and rules that filter out specific traffic patterns you define. You can get started quickly using Managed Rules for AWS WAF, a pre-configured set of rules managed by AWS or AWS Marketplace Sellers. The Managed Rules for WAF address issues like the OWASP Top 10 security risks. These rules are regularly updated as new issues emerge. AWS WAF includes a full-featured API that you can use to automate the creation, deployment, and maintenance of security rules. With AWS WAF, you pay only for what you use. The pricing is based on how many rules you deploy and how many web requests your application receives. -
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Palo Alto Networks VM-Series
Palo Alto Networks
Meet demand with automatable, scalable and easy-to-deploy virtual firewalls ideal for environments where deploying hardware firewalls is difficult or impossible. VM-Series virtual firewalls provide all the best-in-class, ML-powered capabilities of the Palo Alto Networks next-generation hardware firewall in a virtual machine form factor, so you can secure the environments that are vital for your competitiveness and innovation. Now you can leverage a single tool to safeguard cloud speed and software-defined agility by infusing segments and microsegments with threat prevention. -
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vSRX Virtual Firewall
Juniper Networks
Organizations are increasingly moving workloads to the cloud to capitalize on virtualization benefits—but with that move comes new security requirements. Enter the vSRX Virtual Firewall, providing scalable, secure protection across private, public, and hybrid clouds. -
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Agilio OVS Firewall
Netronome
Agilio OVS Firewall gives users the ability to define more intelligent filtering policies, security groups, access control lists, and stateful firewall applications. The solution is a drop-in accelerator for OVS, making it compatible with existing network tools, controllers and orchestration software. Netronome Agilio SmartNICs and Agilio software track the features of standard OVS, which are continuously evolving and include server-based networking functions such as flexible match-action forwarding, connection tracking (Conntrack), network overlay control with tunneling protocols such as VXLAN and NVGRE, and fine-grained statistics and meters. These features enable functions such as L2/L3 forwarding, network virtualization, security, load balancing and analytics. Agilio Firewall Software, combined with Agilio SmartNICs augments the Agilio OVS Software product to enable zero-trust stateful security while significantly improving server-based networking performance. -
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NetFortris Total Control Firewall
NetFortris
NetFortris Total Control Firewall prevents unauthorized access to corporate data, while giving your employees the access they need to do their jobs. NetFortris delivers flexible and scalable Firewall and Unified Threat Management (UTM) solutions to protect our single-location and multi-site customers, their data, and their customers from unwanted malicious traffic. -
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Cisco Adaptive Security Appliance (ASA) Software is the core operating system for the Cisco ASA Family. It delivers enterprise-class firewall capabilities for ASA devices in an array of form factors - standalone appliances, blades, and virtual appliances - for any distributed network environment. ASA Software also integrates with other critical security technologies to deliver comprehensive solutions that meet continuously evolving security needs.
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Total Security Management
RackFoundry
TSM is the first completely consolidated security device that allows organizations to have complete coverage in a simple, cost-effective, and resilient platform. TSM combines a fully integrated device with sophisticated automated defenses to harden your network. No matter your security goals, why settle for anything less than Total Security Management?
