Top Free Firewall Software

Check Point Next Generation Firewalls (NGFWs)

Strengthen Your Security with Check Point Gateways and Firewalls Check Point Hybrid Mesh Network Security is a comprehensive cybersecurity solution designed to protect networks from sophisticated cyber threats while ensuring seamless management across diverse hybrid environments – on-premises, cloud, SaaS, and remote users. This product encompasses advanced threat prevention, real-time global threat intelligence, and unified policy management, making it an essential tool for organizations looking to secure their IT infrastructure, including data centers, hybrid clouds, and remote endpoints. Targeted at enterprises of all sizes, Check Point's solution caters to a wide range of industries that require robust security measures to safeguard sensitive data and maintain operational integrity. The product is particularly beneficial for organizations with complex network architectures, including those utilizing cloud services, Software as a Service (SaaS) applications, and remote workforces. By addressing the unique security challenges posed by these environments, Check Point enables businesses to maintain a secure and resilient IT ecosystem. One of the standout features of Check Point Hybrid Mesh Network Security is its AI-powered threat prevention capabilities. This technology allows for the identification and mitigation of threats in real-time, ensuring that organizations can respond swiftly to potential breaches. Additionally, the solution offers comprehensive security for various aspects of the IT landscape, including network and cloud security. This multi-faceted approach ensures that users, applications, and data are protected regardless of their location, whether on-premises, or in the cloud. This adaptability is complemented by unified security management, which simplifies operations through a single platform that provides visibility, policy enforcement, and posture control across the entire network. Furthermore, Check Point Hybrid Mesh Network Security is designed to optimize performance and cost. With high-speed, prevention-first security and on-device security controls, organizations can achieve effective protection without compromising on efficiency. The consistent application of zero-trust policies across the hybrid mesh network enhances security posture, ensuring that all components of the IT environment are uniformly protected against evolving cyber threats. This comprehensive solution empowers organizations to level up their protection and confidently navigate the complexities of modern cybersecurity challenges.

Average Rating: 4.5/5.0

Total Reviews: 517

FortiGate-VM NGFW

FortiGate-VM is a virtual firewall solution designed to help users secure their cloud environments and on-premises networks. As a next-generation firewall developed by Fortinet, FortiGate-VM integrates advanced security features with the flexibility of virtualization, making it suitable for deployment in various public and private cloud infrastructures. This solution is particularly beneficial for organizations looking to enhance their cybersecurity posture while leveraging the scalability and efficiency of cloud technologies. Targeted at enterprises and organizations of all sizes, FortiGate-VM is ideal for IT security teams that require robust protection against increasingly sophisticated cyber threats. Its deployment across diverse environments allows businesses to maintain consistent security policies and practices, regardless of whether their infrastructure is on-premises, in the cloud, or a hybrid of both. Specific use cases include protecting sensitive data in cloud applications, securing remote access for employees, SD-WAN, and ensuring compliance with industry regulations. One of the key features of FortiGate-VM is its AI-powered threat intelligence. FortiGuard utilizes machine learning algorithms to analyze vast amounts of data, enabling the identification of emerging threats in real time. This proactive approach to threat detection ensures that organizations can respond swiftly to potential vulnerabilities before they can be exploited. Additionally, the behavioral analysis capabilities of FortiGate-VM allow for the identification of anomalous activities, further enhancing its ability to mitigate risks associated with cyberattacks. FortiGate-VM stands out in the virtual firewall category due to its seamless integration with existing Fortinet security solutions, providing a comprehensive security architecture. The solution offers advanced features such as intrusion prevention, web filtering, and application control, all of which contribute to a multi-layered defense strategy. Furthermore, its scalability allows organizations to easily adjust their security resources in response to changing business needs, ensuring that they remain protected as they grow. FortiGate-VM delivers unmatched security and value, making it a vital component for organizations seeking to fortify their defenses against the evolving landscape of cyber threats. Its combination of advanced threat protection, AI-driven insights, and flexible deployment options positions it as a critical tool for maintaining a secure and resilient network environment.

Average Rating: 4.6/5.0

Total Reviews: 249

Palo Alto Networks Cloud NGFW

Palo Alto Networks Cloud NGFW is a fully managed, cloud-native firewall service designed to enhance security, streamline operations, and provide seamless scalability across various cloud environments, including AWS and Microsoft Azure. This solution is specifically tailored to meet the demands of modern digital infrastructures, offering robust protection for applications and data through inline threat prevention, centralized management, and elastic scaling. With Cloud NGFW, organizations can focus on their core activities without the burden of managing complex infrastructure or traditional firewall appliances. The Cloud NGFW service is built on decades of cybersecurity expertise, extending Palo Alto Networks' renowned prevention capabilities into the cloud. It combines deep application awareness with AI-driven threat detection and advanced controls for users, devices, and workloads. This powerful combination enables organizations to identify and neutralize both known and unknown threats, including zero-day exploits, with automated accuracy. The service is backed by an industry-leading 99.99% availability SLA, ensuring that security measures and operational uptime are effectively aligned. Targeted at businesses of all sizes, Cloud NGFW simplifies cloud network security for both security and cloud infrastructure teams. Whether organizations are migrating workloads, managing hybrid or multi-cloud strategies, or developing new applications directly in the cloud, Cloud NGFW ensures consistent security policy enforcement across diverse environments. Its native integration with AWS Firewall Manager and Azure Virtual WAN, along with compatibility with Strata Cloud Manager, provides teams with a centralized view of their security policies, traffic, and potential threats across all deployments. Key features of Cloud NGFW include flexible consumption options such as pay-as-you-go and credit-based licensing, support for burst traffic through dynamic scaling, and tight integration with Palo Alto Networks' advanced Cloud-Delivered Security Services (CDSS). These services, which include Advanced Threat Prevention, Advanced URL Filtering, Advanced DNS Security, and WildFire, offer inline protections without sacrificing performance. This capability allows teams to effectively reduce security risks while minimizing operational complexity. As organizations increasingly adopt cloud technologies and face evolving cyber threats, they often encounter challenges such as tool sprawl, inconsistent policies, and limited visibility. Cloud NGFW addresses these issues by unifying threat prevention and policy control into a single, intuitive service. This integration helps teams eliminate security gaps, reduce misconfigurations, and respond to incidents more swiftly. By empowering organizations to secure their dynamic cloud environments confidently, Cloud NGFW supports scalability as business needs change, simplifies daily operations, and delivers the high-efficacy protection essential for today's digital-first enterprises.

Average Rating: 4.3/5.0

Total Reviews: 166

Check Point Cloud Firewall (formerly CloudGuard Network Security)

CloudGuard Network Security is a comprehensive cloud security solution designed to protect public, private, and hybrid cloud environments from a wide array of cyber threats. This platform focuses on delivering advanced threat protection, ensuring that organizations can confidently transition to the cloud while maintaining robust security measures. With an impressive malware catch rate, CloudGuard is engineered to defend against various types of attacks, including ransomware and other malicious software. Targeted at enterprises and organizations that are increasingly adopting cloud technologies, CloudGuard Network Security is particularly beneficial for IT teams and security professionals who require a reliable and efficient way to manage security across multiple environments. The solution is ideal for businesses looking to enhance their cloud security posture without compromising on agility or operational efficiency. By integrating seamlessly with leading Infrastructure as Code (IaC) tools, CloudGuard automates network security processes, making it easier for teams to implement security measures within their continuous integration and continuous deployment (CI/CD) workflows. One of the standout features of CloudGuard is its advanced protection capabilities. The platform includes a suite of security features such as a firewall, data loss prevention (DLP), intrusion prevention system (IPS), application control, IPsec VPN, URL filtering, antivirus, anti-bot protection, threat extraction, and threat emulation. These tools work in concert to provide a multi-layered defense strategy that addresses various attack vectors, ensuring that organizations can mitigate risks effectively. Additionally, CloudGuard's automated network security capabilities support IaC and CI/CD practices, allowing organizations to streamline their security processes through the use of APIs and automation. This enables security teams to focus on more strategic initiatives rather than being bogged down by manual tasks. The unified security management feature further enhances the solution by providing consistent visibility and policy management across hybrid-cloud and on-premises environments. Users can access logging, reporting, and control from a single interface, simplifying the management of security policies and improving overall operational efficiency. Overall, CloudGuard Network Security stands out in the cloud security landscape by offering a robust, integrated solution that not only protects against emerging threats but also enhances the agility and efficiency of security operations. Its comprehensive feature set and automation capabilities make it a valuable asset for organizations navigating the complexities of cloud security.

Average Rating: 4.4/5.0

Total Reviews: 273

Arista NG Firewall

NG Firewall simplifies network security with a single, modular, software platform that provides a browser-based, responsive and intuitive interface enabling you to quickly gain visibility into the traffic on your network. NG Firewall delivers a comprehensive, enterprise-grade network security platform including content filtering, advanced threat protection, VPN connectivity, application-based shaping for bandwidth optimization.

Average Rating: 4.7/5.0

Total Reviews: 17

Cloudflare One (SASE)

Cloudflare One is a single-vendor secure access service edge (SASE) platform that converges security and networking services into a unified, global connectivity cloud. It replaces legacy, fragmented hardware and first-generation SASE solutions with a composable, programmable architecture. Cloudflare One connects and protects an organization's workforce, AI agents, and infrastructure. Learn more at https://www.cloudflare.com/sase/ Designed for agility, it enables teams to: - Accelerate safe AI adoption with granular visibility, control, and AI agent governance. - Modernize remote access by replacing clunky VPNs with zero trust access. - Block email phishing attacks with flexible, SASE-native email security. - Protect web traffic for remote users and branch offices with lightweight DNS filtering. - Deploy “coffee shop networking” with a light branch, heavy cloud approach.

Average Rating: 4.6/5.0

Total Reviews: 102

FortiGate Cloud-Native Firewall (CNF)

FortiGate CNF is an enterprise-grade cloud-native firewall delivered as a service. It automatically scales protection to meet the dynamic demands of your cloud environments to prevent threats such as malware, data exfiltration, botnets, and compliance violations.

Average Rating: 4.3/5.0

Total Reviews: 13

Netgate pfSense

pfSense® Plus software is the world’s most trusted firewall. The software has garnered the respect and adoration of users worldwide - installed well over three million times. Made possible by open source technology. Made into a robust, reliable, dependable product by Netgate.

Average Rating: 4.7/5.0

Total Reviews: 318

Avast Small Business Cybersecurity

Avast delivers all-in-one cybersecurity solutions, protecting over 400 million users. Our Endpoint Protection solutions like Next-gen Antivirus and automated Patch Management work together to protect your devices, data, and applications - saving both time and money.

Average Rating: 4.4/5.0

Total Reviews: 99

CrowdSec

CrowdSec is an open-source security stack that detects aggressive behaviors and prevents them from accessing your systems. Its user-friendly design and ease of integration into your current security infrastructure offer a low technical entry barrier and a high-security gain. Once an unwanted behavior is detected, it is automatically blocked. The aggressive IP, scenario triggered and the timestamp is sent for curation, to avoid poisoning & false positives. If verified, this IP is then redistributed to all CrowdSec users running the same scenario. By sharing the threat they faced, all users are protecting each other.

Average Rating: 4.7/5.0

Total Reviews: 85

B1 Platform by CloudCover

A network security platform, years in the making, leveraging mathematics to continuously learn, predict, and defend against attacks.

Average Rating: 4.6/5.0

Total Reviews: 43

Barracuda for MSPs

Barracuda MSP is designed to manage how IT providers deploy data protection strategries to SMB customers.

Average Rating: 4.1/5.0

Total Reviews: 38

DiscrimiNAT Firewall

The DiscrimiNAT Firewall is a transparent, proxy-less Managed NAT alternative to discover & filter egress traffic by FQDNs in a Shared VPC. It's built upon our cutting-edge technology, Wormhole DNS, that handles highly variable, low TTL and load-balanced domain name resolution results perfectly well to give your applications uninterrupted access to allowed destinations. CONSOLE INTEGRATION There are no new UIs to learn – the configuration is stored in cloud resources directly, and the flow & audit logs go to the native logging service. GitOps FTW because only cloud's APIs are used for interfacing, you will never have to leave the cloud console. SPOOFING PREVENTION Unlike SNI only or Suricata based, DiscrimiNAT does conduct out-of-band DNS lookups, so TLS SNI spoofing by supply-chain malware will be logged & stopped. It even supports allowing SSH by FQDNs. The next Log4J won't slip through! SAFE WILDCARDS Public Suffix List safeguard in place, by default, to reject wildcard patterns matching all tenants on a CSP or a CDN (aka Effective TLDs); precise patterns can also be configured with use of glob characters (*, ?). TRANSPARENT OPERATION No need to set http_proxy like environment variables or change any code. Everything in the VPC, from VMs to k8s and Serverless, will have its egress traffic routed through DiscrimiNAT. Swapping to (and from) Managed NAT is just changing a route table entry. FQDN DISCOVERY Don't know what needs allowing? With the ‘see-thru’ monitor mode, egress traffic can be logged without blocking; then a CLI command extracts FQDNs accessed. We have a 3½ min video on how easy it is! LEAST PRIVILEGE EGRESS You no longer need to apply the entire allowlist to large CIDR ranges hosting multiple applications. The policies are as granular as native firewall rules/security groups, so each application gets access to only what it needs. This translates to micro-segmentation in Zero Trust architectures. DEVELOPER GUARD RAILS With bidirectional enforcement of TLS 1.2+ and SSH v2, automated expiry of exemptions, dropping unencrypted Internet-bound traffic, etc., each feature has been carefully designed to avoid footguns. REFINED OPERABILITY DiscrimiNAT integrates with cloud's native load balancers and runs with high-availability, load-balancing & auto-scaling within your VPC. It's also completely maintenance-free! ENTERPRISE READY Whether you seek compliance with PCI DSS v4.0 or NIST SP 800-53 AC-4 , SC-7 and SC-8, we've got it covered. Also, DiscrimiNAT is hardened to CIS Ubuntu Linux 20.04 LTS Benchmark v1.1.0 Level 2 - Server. Besides the quarterly updates, critical OS updates are released in less than 10 days and rolling updates apply seamlessly.

Average Rating: 4.8/5.0

Total Reviews: 3

ThreatLocker Zero Trust Platform

ThreatLocker is a global leading Zero Trust Platform designed to empower organizations by providing them with the ability to control which applications are permitted to run on their networks. This suite of security tools is tailored for a wide range of users, including businesses, government agencies, and academic institutions, all of whom face the increasing threat of cybercrime. By enabling users to manage application execution, ThreatLocker aims to create a secure environment where organizations can operate without the looming fear of malware and other cyber threats. The ThreatLocker suite stands out in the cybersecurity landscape due to its focus on application allowlisting, a proactive approach that allows organizations to define and enforce policies on what software can be executed. This feature is particularly beneficial for organizations that require stringent security measures, as it minimizes the risk of unauthorized applications compromising sensitive data. The solution is designed for IT administrators who seek to enhance their network security posture while maintaining operational efficiency. One of the key features of ThreatLocker is its ability to provide real-time visibility and control over application behavior. This allows organizations to monitor application usage and detect any suspicious activities that may indicate a potential threat. Additionally, ThreatLocker offers customizable policies that can be tailored to meet the specific needs of different departments or user groups within an organization, ensuring that security measures align with operational requirements. Another significant benefit of ThreatLocker is its user-friendly interface, which simplifies the management of security policies. This accessibility enables IT teams to implement and adjust security measures without extensive training or expertise in cybersecurity. Furthermore, ThreatLocker is backed by a team of experienced cybersecurity professionals who continuously update and enhance the platform to address emerging threats and vulnerabilities. In essence, ThreatLocker provides organizations with the tools they need to take control of their cybersecurity strategy. By focusing on application control and offering robust monitoring capabilities, ThreatLocker helps organizations mitigate risks associated with cyber threats while fostering a secure environment for their operations. This innovative approach to cybersecurity empowers users to navigate their digital landscape confidently, free from the influence of cybercriminals.

Average Rating: 4.8/5.0

Total Reviews: 513

enforza Firewall & Secure NAT Gateway

Enforza — cloud-managed firewall and secure NAT gateway Enforza is a cloud-managed firewall and secure NAT gateway that gives cloud, platform and security teams the same L3/L4/L7 egress control and secure NAT as the cloud-native services — at a flat, per-firewall price with no per-GB data-processing tax. For teams watching their AWS or Azure bill, that works out up to 60–80% cheaper than AWS Network Firewall, Azure Firewall, Google Cloud NGFW and cloud-native NAT gateways, because the price doesn't move with your traffic. It's not new. Enforza has been doing this for around three years, runs on the AWS Marketplace, and operates as a transparent AWS Gateway Load Balancer (GWLB) inspection appliance — a capability only a short list of enterprise NGFW vendors otherwise offer. Why teams switch Every cloud-native firewall meters you per GB of data processed — a tax that grows with every byte — usually on top of a per-hour endpoint fee that is duplicated for each Availability Zone. On AWS, a typical 2-AZ deployment runs two firewall endpoints (roughly $577/month before a single byte is inspected), then adds a per-GB charge on every byte after that. Enforza is a drop-in replacement: one appliance, flat per-firewall pricing, no per-hour endpoint fee, no per-GB charge. Because the price is fixed, the savings widen as your egress grows. (Honest note: Enforza replaces the firewall/NAT appliance and the per-GB tax. Your cloud provider's own infrastructure charges — compute hours, bandwidth — still apply. The 60–80% figure is directional; use the savings calculator on enforza.io for your own numbers.) Two ways to run it — your team's choice GitOps / GitHub Pipeline Integration. Manage firewall policy as code through a GitHub pipeline, with pull-request review, guardrail checks and an audit trail on every change. Policy-as-code for teams who already live in their pipeline. Cloud Controller console. Drive the same firewall by hand from a managed web console — define rules, manage your fleet, and see policy across clouds and regions from one place. Same firewall NVA underneath, same engine, same capabilities. The operating model is your decision, and you can run both across a fleet. Core capabilities Firewall (L3/L4/L7). SNI- and FQDN-based application filtering, plus network and VM objects, applied to egress, ingress and east-west (VPC-to-VPC, lateral) traffic — so movement between workloads is governed, not just the outbound path. No TLS decryption and no key custody, ever. Egress / SNI filtering. Control exactly which destinations your workloads can reach by hostname, with AWS IP-range and Azure Service-Tag imports kept current automatically. Secure NAT gateway. Managed outbound NAT without the cloud-native NAT gateway's per-GB processing charge — a direct answer to the Azure default-outbound-access retirement and to AWS NAT gateway cost reviews. GWLB inspection appliance. Run Enforza transparently behind an AWS Gateway Load Balancer for centralised, scalable traffic inspection — the architecture teams otherwise reach a mega-NGFW for. Consistent multi-cloud policy. One platform across AWS and Azure (GCP secondary): apply the same security policy across multiple clouds, regions and accounts, instead of re-learning each provider's native firewall. Compliance and governance. Advise-or-enforce guardrails check firewall-rule changes against 25 framework packs and over 200 controls, so policy stays compliant on every change rather than at audit time. High-performance engine. Enforza's own engine classifies and applies a verdict to each flow in microseconds, built on standard Linux network primitives. Your network, your data Enforza deploys as a network virtual appliance (NVA) inside your own cloud network — your VMs, your account, your routing. Traffic logs go to your own SIEM; they don't flow through Enforza's cloud. You keep ownership and control of your data, with no internet-exposed management plane to patch and defend yourself. Who it's for Cloud, platform, network and security engineers, SRE/DevOps leads and cloud architects — the people who own the egress policy and the cloud network bill. It fits teams running real workloads in AWS and/or Azure with enough egress and NAT traffic that the per-GB tax actually hurts: scale-ups, mid-market, cost-conscious enterprise teams, and MSP/MSSP fleets running firewalls for multiple clients. How Enforza compares vs AWS Network Firewall / Azure Firewall / Google Cloud NGFW: the same core L3/L4/L7 control and secure NAT, without the per-GB data-processing tax or per-AZ endpoint fees. You replace the metered firewall, keep the control, and deploy in your own network. vs enterprise NGFWs (Palo Alto, Fortinet, Check Point): the focused inspection and egress capability most cloud teams actually use — including GWLB inspection — at flat per-firewall pricing, without the bloat or vCPU-metered licensing of a full NGFW suite. vs DIY / open-source (pfSense, OPNsense, fck-nat): the same escape from per-GB NAT charges, but managed — HA, one console for the whole fleet, no SSH-into-boxes, no internet-exposed management plane, no DIY patching. Getting started Start on the free tier, run a 14-day trial of the full feature set, deploy one-click from the AWS Marketplace, or book a demo for fleet, MSP and enterprise rollouts. Flat per-firewall pricing, with volume pricing that lowers the per-firewall rate as your fleet grows. Enforza — the same control, run your way, without the per-GB tax.