Best Firewall Software
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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
Servers.com by Nexcess
Nexcess
Servers.com by Nexcess provides hybrid bare metal cloud infrastructure designed to help businesses scale, customize, and manage their server environments from a unified platform. The company offers a range of solutions including Scalable Bare Metal, Enterprise Bare Metal, AI Compute, and Managed Kubernetes to support diverse workload requirements. Its global network of strategically located data centers helps organizations reduce latency and improve performance for users around the world. Servers.com serves industries such as gaming, fintech, adtech, streaming, SaaS, iGaming, and Web3, delivering reliable infrastructure tailored to each sector's needs. The platform combines dedicated bare metal resources with flexible deployment options to help businesses balance performance, scalability, and cost. With high-performance networking, resource isolation, and global connectivity, Servers.com enables organizations to support mission-critical applications and demanding workloads. -
2
ThreatLocker
ThreatLocker
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. -
3
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. -
4
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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Fortinet
Fortinet
Fortinet is a global leader in cybersecurity solutions, known for its comprehensive and integrated approach to safeguarding digital networks, devices, and applications. Founded in 2000, Fortinet provides a wide range of products and services, including firewalls, endpoint protection, intrusion prevention systems, and secure access solutions. At the core of its offerings is the Fortinet Security Fabric, a unified platform that seamlessly integrates security tools to deliver visibility, automation, and real-time threat intelligence across the entire network. Trusted by businesses, governments, and service providers worldwide, Fortinet emphasizes innovation, scalability, and performance, ensuring robust defense against evolving cyber threats while supporting digital transformation and business continuity. -
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ditno
ditno
ditno. has taken the complexity out of IT security. We provide a single web portal to control access to all of an organization's servers whether they are in the cloud or internally hosted. We solve the problem of consistent and high-performance security across mixed environments. Using a PAYG model we remove the need for upfront investment and allow our customers to pay for exactly what they need at the time. We have a variety of customers across a number of verticals including law, energy, financial services, healthcare, technology and more across Australia and the UK.Starting Price: $25/endpoint/year -
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Prophaze WAF
Prophaze Technologies
Prophaze Cloud WAF protects organizations from malicious hackers who are trying to attack and steal data from Web Applications or Mobile App Gateways or APIs. Unlike traditional firewalls, Prophaze WAF exclusively protects web and mobile APIs from security breach using its Adaptive Profiling and Behavioral-based machine learning algorithms. The product is built natively on Kubernetes Platform and secures customers Kubernetes clusters and cloud infrastructure from various attack vectors.Starting Price: $299 per month -
8
Protectstar Firewall AI
Protectstar
Android Firewall is not only ready to use in seconds but also protects you from hacker attacks and notifies you when an app tries to send data to the internet. Get a real-time view of which apps are accessing which servers or wasting mobile data. With simple filter rules, you can even allow or deny certain connections of an app. With the firewall, you can monitor and block this data traffic. You can also completely block the online access of an app. The AI Android firewall can block unwanted access from known intelligence agencies and government organizations. With our built-in Intrusion Prevention System (IPS), all known servers and IP addresses of the FBI, CIA, NSA, GCHQ, and many more are automatically blocked. If there is an access attempt, you will receive a special warning. Firewall AI protects you from spy servers in countries like China, Iran, and Russia, as well as mobile trackers.Starting Price: $9.90 per year -
9
Bit Guardian Firewall
Bit Guardian
Bit Guardian Firewall is a robust security solution designed to provide a safe, secure, and seamless browsing experience. It offers real-time protection against malicious content by blocking unsafe URLs and filtering unwanted websites and applications. The software includes an ad-blocking feature to eliminate distracting and potentially harmful pop-up and banner ads, ensuring uninterrupted browsing. Additionally, Bit Guardian Firewall safeguards user privacy by preventing online tracking, allowing users to connect to their favorite websites without the fear of being traced. For enhanced security, it offers add-on protection with Avira's malware databases, providing an impenetrable layer against online and offline threats. The firewall is compatible with Windows operating systems and is developed by Bit Guardian GmbH, a leading software development company based in Gräfelfing, Germany.Starting Price: Free -
10
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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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. -
13
MobileWall
CyberReef
Businesses working anywhere and everywhere means skyrocketing mobile data usage. Expanding device models and operating systems. Increasing risks of unsecured mobile wireless connections. Runaway mobile data expenses. With CyberReef’s patented MobileWall cloud firewall service, you can reduce total data usage by 50-70 percent using built-in bandwidth management tools. Use any SIM-based device, get end-to-end encryption of traffic on your cellular connections, and track and control data use and costs. MobileWall gives your business unprecedented security, visibility, and control over your mobile data. MobileWall provides your business with secure mobile wireless connections. MobileWall offers insights into your corporate mobile data usage. MobileWall automates the management of your mobile data usage and costs. MobileWall’s patented cloud-based firewall enables your business to leverage mobile wireless connections securely using any SIM-based device.Starting Price: $3 per month -
14
Quantum Firewall Software R82
Check Point
New AI innovations prevent millions of new zero-day attacks, accelerate security for DevOps, and increase data center operational simplicity and scale. Quantum Firewall Software R82 provides uncompromising security and operational simplicity for Quantum on-premises and CloudGuard Network firewalls. AI-powered, adaptive threat prevention for novel and encrypted threats. Dynamic tools to accommodate rapidly changing environments. Automatically keep up with business growth & unpredictable traffic spikes. NIST-certified encryption to protect against quantum computing hacking. Find hidden relationships and traffic patterns to prevent novel malicious campaigns and brand impersonation. Increases the effectiveness of website categorization to make the most of your security policies. R82 delivers powerful new protection from the most evasive phishing, malware, and DNS attacks, even in encrypted traffic. -
15
Check Point Spark Firewall
Check Point Software
Check Point Spark Firewall is an AI-powered next-generation firewall solution designed specifically for small and medium-sized businesses and managed service providers seeking enterprise-grade cybersecurity protection. The platform delivers advanced threat prevention, malware protection, phishing defense, IoT security, SD-WAN functionality, and secure connectivity through an all-in-one network security appliance. With AI-driven threat intelligence and a malware block rate of up to 99.9%, Spark Firewall helps organizations defend against evolving cyber threats while maintaining high network performance. The solution supports simplified deployment through zero-touch provisioning, cloud-based management, and centralized policy administration, making it easier to manage distributed environments. Integrated features such as Wi-Fi 7, optional 5G connectivity, dual ISP support, and automated failover provide reliable and resilient business connectivity. -
16
WebOrion Protector Plus
cloudsineAI
WebOrion Protector Plus is a GPU-powered GenAI firewall engineered to provide mission-critical protection for generative AI applications. It offers real-time defenses against evolving threats such as prompt injection attacks, sensitive data leakage, and content hallucinations. Key features include prompt injection attack protection, safeguarding intellectual property and personally identifiable information (PII) from exposure, content moderation and validation to ensure accurate and on-topic LLM responses, and user input rate limiting to mitigate risks of security vulnerability exploitation and unbounded consumption. At the core of its capabilities is ShieldPrompt, a multi-layered defense system that utilizes context evaluation through LLM analysis of user prompts, canary checks by embedding fake prompts to detect potential data leaks, pand revention of jailbreaks using Byte Pair Encoding (BPE) tokenization with adaptive dropout. -
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FirewallX
FirewallX
FirewallX is an AI-powered unified security platform that replaces traditional firewalls, VPNs, and monitoring dashboards with a consolidated system for network security, access control, real-time visibility, and compliance. It offers modules for security and management (with DNS filtering, AI detection, and centralized policy enforcement), secure access (identity-based remote access without VPN overhead, role-based provisioning, always-on connectivity with cloud/hardware failover), and visibility (live user, device, and traffic monitoring, root-cause identification, bandwidth insights, and actionable performance recommendations). FirewallX also supports audit readiness via user-level logging, identity tracking, templated reports, and secure backups. The platform is deployed rapidly, scales easily, and maintains continuity via a hybrid architecture (e.g., local hardware plus cloud).Starting Price: $1.69 per month -
18
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 -
19
AWS Firewall Manager
Amazon
AWS Firewall Manager is a security management service which allows you to centrally configure and manage firewall rules across your accounts and applications in AWS Organization. As new applications are created, Firewall Manager makes it easy to bring new applications and resources into compliance by enforcing a common set of security rules. Now you have a single service to build firewall rules, create security policies, and enforce them in a consistent, hierarchical manner across your entire infrastructure. Using AWS Firewall Manager, you can easily roll out AWS WAF rules for your Application Load Balancers, API Gateways, and Amazon CloudFront distributions. Similarly, you can create AWS Shield Advanced protections for your Application Load Balancers, ELB Classic Load Balancers, Elastic IP Addresses and CloudFront distributions. Finally, with AWS Firewall Manager, you can enable security groups for your Amazon EC2 and ENI resource types in Amazon VPCs. -
20
VMware vDefend Distributed Firewall
Broadcom
Stop the lateral spread of threats across multi-cloud environments with a software-based Layer 7 firewall distributed at each workload. Threat actors moving throughout your infrastructure and increasingly sophisticated ransomware attacks make east-west the new battleground. Get the advantage with a software-defined Layer 7 firewall that delivers granular enforcement at scale to secure east-west traffic across today’s multi-cloud world. Easily segment the network, stop the lateral spread of threats, and securely move at the speed of development on your path to Zero Trust. Gain visibility across all network flows to easily achieve granular micro-segmentation and generate context-aware policies for each workload. Reduce the attack surface and defend against known and unknown threats moving within and across clouds with a modern, distributed firewall solution that is purpose-built to secure multi-cloud traffic across virtualized workloads. -
21
NSFOCUS NGFW
NSFOCUS
As the digital attack surface grows, both the volume and sophistication of cyberattacks increase. The resulting data theft and network disruptions can both threaten your reputation and business, a comprehensive security solution is an absolute necessity in every IT infrastructure. NSFOCUS delivers a fully integrated Next Generation Firewall (NGFW) to meet the changing needs of your cloud-enabled enterprise network. It provides NGFW capabilities and collaborates with other security devices to proactively defend against cyber threats, and improve user and application experience while lowering the total cost of ownership. A dedicated AI-based content moderation module effectively recognizes content in texts, images, and videos. Use honeypots and AI algorithms to trap attacks. AI algorithms recognize attacks and apps in encrypted traffic. Scalable AI-based AV engine increases virus detection rate. -
22
AWS Network Firewall
Amazon
With AWS Network Firewall, you can create firewall rules that provide fine-grained control over network traffic and easily deploy firewall security across your VPCs. Automatically scale your network firewall to protect your managed infrastructure. Protect your unique workloads with a flexible engine that can define thousands of custom rules. Centrally manage security policies across existing accounts and VPCs and automatically enforce mandatory policies on new accounts. With AWS Network Firewall, you can define firewall rules that provide fine-grained control over network traffic. Network Firewall works together with AWS Firewall Manager so you can build policies based on Network Firewall rules and then centrally apply those policies across your virtual private clouds (VPCs) and accounts. Inspect traffic flows using features such as inbound encrypted traffic inspection, stateful inspection, protocol detection, and more. -
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Centralize and simplify your firewall admin and intrusion prevention. With visibility across ever-changing and global networks, you can manage modern applications and malware outbreaks in real-time. Easily switch between managing hundreds of firewalls, controlling applications, and blocking intrusion attempts and the spread of malware. Write a policy and scale its enforcement across multiple security controls within your network. Enjoy unified management and control over firewalls, applications, intrusion prevention, and file and malware protection. Comprehensibly manage your firewalls using our on-premises hardware or from any virtual environment of your choice. Flexibly deploy the same manager on your public cloud infrastructure, or boost productivity one step further with our cloud-delivered solution. Detect the most sophisticated threats sooner across all vectors and prioritize by impact for faster responses.
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24
GajShield
GajShield
GajShield is a comprehensive cybersecurity solution designed to provide in-depth protection against various attacks by tightly integrating key security functions and securely connecting remote offices and partners. It combines ICSA Certified Firewall appliances, Data Leak Prevention (DLP), Cloud Security, Intrusion Prevention System (IPS), Virtual Private Network (VPN), URL Filtering, Virus Screening, and Bandwidth Management into a single appliance to deliver layered network security. GajShield's Contextual Intelligence Engine enables advanced visibility of data transactions by breaking down data packets into multiple small data contexts, allowing for granular policy enforcement and efficient threat detection. The DLP solution acts as an enforcer of data security policies, detecting and preventing unauthorized transmission of confidential information through deep content inspection and contextual security analysis. -
25
PAN-OS
Palo Alto Networks
PAN-OS is Palo Alto Networks’ ML-powered next-generation firewall operating system that delivers core network security capabilities in a single, high-performance platform. It features App-ID, a patented traffic classification engine that automatically discovers and controls new and evasive applications, and Content-ID, which scans all network traffic in a single pass for comprehensive threat protection without sacrificing throughput. The Cloud Identity Engine aggregates and synchronizes user identities across multiple identity providers, enabling consistent, point-and-click zero-trust authentication and authorization. Device-ID maintains policy enforcement for devices regardless of IP changes or location, providing full context for security, decryption, QoS, and authentication policies. The OS employs post-quantum cryptographic algorithms and Quantum-resistant VPNs to safeguard against future decryption threats. -
26
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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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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