Best Firewall Software - Page 5

How Many Firewall Software Products Does G2 Track?

Total Products under this Category: 115

Category Stats (Nov 2026)

  • Average Rating: 4.42/5 (↓0.01 vs Oct 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Palo Alto Networks Cloud NGFW (+0.35%) - Among all products in this category, Palo Alto Networks Cloud NGFW recorded the largest rating increase compared to last month

Last updated: November 01, 2026

How Does G2 Rank Firewall Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 5,400+ Authentic Reviews
  • 115+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for Firewall Software

G2 Grid® for Firewall Software plotting products by satisfaction and market presence

Highlighted products: Sophos Firewall, FortiGate-VM NGFW, Palo Alto Networks Cloud NGFW, Check Point Next Generation Firewalls (NGFWs), Zscaler Internet Access, Arista NG Firewall, Check Point Cloud Firewall (formerly CloudGuard Network Security), and Palo Alto Networks Next-Generation Firewalls.

Underlying data: [Grid® JSON](https://www.g2.com/categories/firewall-software/grids.json?focus%5B%5D=sophos-firewall&focus%5B%5D=fortigate-vm-ngfw&focus%5B%5D=palo-alto-networks-cloud-ngfw&focus%5B%5D=check-point-next-generation-firewalls-ngfws&focus%5B%5D=zscaler-internet-access&focus%5B%5D=arista-ng-firewall&focus%5B%5D=check-point-cloud-firewall-formerly-cloudguard-network-security&focus%5B%5D=palo-alto-networks-next-generation-firewalls)

Quantum Flare

Quantum Flare helps you take back control of your devices. Easily monitor data usage, internet connections and WiFi usage in Real Time. View and control which apps are slowing down your device, or wasting your mobile data. Install now, and see what your device is really doing.

Average Rating: 5.0/5.0

Total Reviews: 1

Who Is the Company Behind Quantum Flare?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Quantum Flare?

What Are G2 Users Discussing About Quantum Flare?

Sangfor NGAF Firewall

Sangfor Network Secure (previously known as Sangfor NGAF) is a cutting-edge Next Generation Firewall (NGFW) packed with innovative features. It is the world's first AI-enabled NGFW (Next Generation Firewall) and fully integrated a Web Application Firewall (WAF) to provide both network- and application-level protection. It leverages artificial intelligence, machine learning, and real-time threat intelligence to deliver a superior malware detection rate of 99.76%.

Average Rating: 4.0/5.0

Total Reviews: 2

How Do G2 Users Rate Sangfor NGAF Firewall?

  • Has the product been a good partner in doing business?: 8.3/10 (Category avg: 8.9/10)
  • Availability: 8.3/10 (Category avg: 8.9/10)
  • Intrusion Prevention: 8.3/10 (Category avg: 9.0/10)
  • Continuous Analysis: 8.3/10 (Category avg: 8.7/10)

Who Is the Company Behind Sangfor NGAF Firewall?

  • Seller: Sangfor Technologies
  • Year Founded: 2000
  • HQ Location: Shenzhen, China
  • Twitter: @SANGFOR
    13,224 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    2,344 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 50% Medium, 50% Small

What Are Recent G2 Reviews of Sangfor NGAF Firewall?

Security|Link

The CommandLink security provides a comprehensive software-based security solution with a number of crucial features and functions designed to ensure that your systems remain well prepared to fend off cyber threats Only with CommandLink will you have the unique ability to consolidate all of your security functions and visibility into a centralized management and policy control panel. CommandLink's unique security architecture enables you to replace the need for separate WAN routers, WAN optimization, and additional security devices with a single solution. Free up your IT staff—let us handle your tactical security. Remove the burden of managing multiple security solutions through a simple consolidated solution from CommandLink.

Average Rating: 3.5/5.0

Total Reviews: 1

How Do G2 Users Rate Security|Link?

  • Availability: 6.7/10 (Category avg: 8.9/10)
  • Intrusion Prevention: 10.0/10 (Category avg: 9.0/10)
  • Continuous Analysis: 6.7/10 (Category avg: 8.7/10)

Who Is the Company Behind Security|Link?

  • Seller: CommandLink
  • Year Founded: 2012
  • HQ Location: Bothell, Washington, United States
  • LinkedIn® Page: www.linkedin.com
    314 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Medium

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Simplewall

Simplewall delivers robust firewall security, rich content filtering rules engine, bandwidth management and a simple way to monitor and stay on top.

Average Rating: 4.5/5.0

Total Reviews: 1

How Do G2 Users Rate Simplewall?

  • Availability: 8.3/10 (Category avg: 8.9/10)
  • Intrusion Prevention: 10.0/10 (Category avg: 9.0/10)
  • Continuous Analysis: 10.0/10 (Category avg: 8.7/10)

Who Is the Company Behind Simplewall?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Simplewall?

Smoothwall UTM

Designed to provide a complete security solution in a single product, giving you complete protection and visibility in all-in-one.

Average Rating: 4.3/5.0

Total Reviews: 2

How Do G2 Users Rate Smoothwall UTM?

  • Has the product been a good partner in doing business?: 8.3/10 (Category avg: 8.9/10)
  • Availability: 8.3/10 (Category avg: 8.9/10)
  • Intrusion Prevention: 5.0/10 (Category avg: 9.0/10)
  • Continuous Analysis: 1.7/10 (Category avg: 8.7/10)

Who Is the Company Behind Smoothwall UTM?

  • Seller: Smoothwall
  • Year Founded: 2001
  • HQ Location: Leeds, GB
  • Twitter: @Smoothwall
    2,798 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    173 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 50% Medium, 50% Small

What Are Recent G2 Reviews of Smoothwall UTM?

VMware vDefend Distributed Firewall

VMware vDefend Distributed Firewall is a software-defined Layer 7 firewall integrated directly into the hypervisor, providing comprehensive security for application workloads across virtual machines, containers, and bare-metal servers. By enforcing zero trust micro-segmentation, it effectively limits lateral movement of threats within the network, ensuring robust protection without the need for traditional hardware firewalls. This integration allows for seamless scalability and centralized management, simplifying operations and enhancing the security posture of modern private cloud infrastructures. Key Features and Functionality: - Distributed Layer 7 Stateful Firewalling: Enforces security policies at the virtual network interface card (vNIC level, inspecting both ingress and egress traffic to prevent unauthorized access and lateral movement within the network. - Advanced Threat Prevention (ATP: Incorporates intrusion detection and prevention systems (IDS/IPS, network traffic analytics, network detection and response (NDR, and network sandboxing to detect and block sophisticated threats, including ransomware and zero-day attacks. - Micro-Segmentation as Code: Offers an API-driven model that integrates with automation frameworks, allowing security policies to be applied as part of the application deployment process, ensuring consistent protection across dynamic environments. - Scalability Across Diverse Workloads: Protects virtual machines, containers, and bare-metal servers, ensuring consistent, centralized policy enforcement across hybrid and multi-cloud environments. - Simplified Security Operations: Features a self-contained, scale-out platform that streamlines deployment of security intelligence and advanced threat prevention tools, enhancing user experience with simplified network design and lifecycle management. Primary Value and Problem Solved: VMware vDefend Distributed Firewall addresses the critical need for robust, scalable, and easily manageable security in modern, dynamic IT environments. By integrating directly into the hypervisor, it eliminates the need for traditional hardware firewalls, reducing complexity and cost. Its micro-segmentation capabilities enforce zero trust principles, effectively limiting the lateral spread of threats and minimizing the attack surface. This ensures that organizations can protect their critical assets against sophisticated cyber threats, including ransomware and zero-day attacks, while maintaining operational agility and compliance with regulatory standards.

Average Rating: 4.5/5.0

Total Reviews: 1

How Do G2 Users Rate VMware vDefend Distributed Firewall?

  • Has the product been a good partner in doing business?: 8.3/10 (Category avg: 8.9/10)

Who Is the Company Behind VMware vDefend Distributed Firewall?

  • Seller: Broadcom
  • Year Founded: 1991
  • HQ Location: San Jose, CA
  • Twitter: @broadcom
    63,909 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    44,602 employees on LinkedIn®
  • Ownership: NASDAQ: CA

Who Uses This Product?

  • Company Size: 100% Large

What Do G2 Reviewers Say About VMware vDefend Distributed Firewall?

AI-generated summary from verified user reviews

Pros
  • Users value the easy setup of VMware vDefend Distributed Firewall, finding it straightforward and helpful for maintenance.

What Are Recent G2 Reviews of VMware vDefend Distributed Firewall?

Akamai Firewall for AI

Akamai Firewall for AI is a specialized security solution designed to protect AI-driven applications, including large language models (LLMs) and AI-powered APIs, from emerging cyber threats. By securing both incoming AI queries and outgoing AI responses, it addresses vulnerabilities introduced by generative AI technologies, ensuring safe and reliable AI interactions. Key Features and Functionality: - Multilayered Protection: Blocks adversarial inputs, unauthorized queries, and large-scale data scraping to prevent model manipulation and data exfiltration. - Real-Time AI Threat Detection: Utilizes adaptive security rules to dynamically respond to evolving AI-based attacks, including prompt injection and model exploitation. - Compliance and Data Protection: Ensures AI-generated outputs remain safe and align with regulatory and industry standards. - Flexible Deployment Options: Offers integration via Akamai edge, REST API, or reverse proxy, enabling seamless incorporation into existing security frameworks. - Proactive Risk Mitigation: Filters AI outputs to prevent toxic content, hallucinations, and unauthorized data leaks. Primary Value and User Solutions: Akamai Firewall for AI provides comprehensive security for AI applications by identifying and mitigating AI-specific vulnerabilities that traditional security tools may overlook. It safeguards against prompt injections, sensitive data leaks, adversarial exploits, and AI-specific denial-of-service attacks. By offering real-time detection, policy-based enforcement, and adaptive security measures, it enables organizations to deploy AI innovations confidently, ensuring compliance, protecting sensitive data, and maintaining the integrity of AI-driven operations.

Who Is the Company Behind Akamai Firewall for AI?

  • Seller: Akamai Technologies
  • Year Founded: 1998
  • HQ Location: Cambridge, MA
  • Twitter: @Akamai
    115,251 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    10,658 employees on LinkedIn®
  • Ownership: NASDAQ:AKAM

Akamai Secure Internet Access Enterprise

Akamai Secure Internet Access Enterprise is a cloud-based DNS firewall designed to safeguard organizations by proactively blocking malicious DNS requests, including those associated with malware, ransomware, phishing, and DNS data exfiltration. This solution ensures that all users and devices, whether on or off the corporate network, can securely connect to the internet without the need for on-premises appliances, thereby reducing security complexity and management overhead. Key Features and Functionality: - Real-Time Threat Intelligence: Utilizes Akamai's extensive internet visibility to identify and block access to malicious domains and websites, providing up-to-date protection against emerging threats. - Flexible Inspection Levels: Offers customizable security measures, including recursive DNS-only inspection and proxy capabilities for risky web traffic, allowing organizations to tailor protection to their specific needs. - DNS Data Exfiltration Prevention: Detects and blocks low-throughput DNS data exfiltration attempts in real-time, safeguarding sensitive information from unauthorized transfer. - Shadow IT Control: Identifies and manages unsanctioned applications within the network by controlling applications based on risk scores or application types, enhancing overall security posture. - Multi-Device Protection: Secures various devices, including Windows, macOS, iOS, Android, and ChromeOS, with lightweight client applications, ensuring comprehensive coverage across diverse IT environments. Primary Value and Problem Solved: Akamai Secure Internet Access Enterprise addresses the critical need for organizations to protect their users and devices from internet-based threats, regardless of their location. By leveraging real-time threat intelligence and eliminating the need for on-premises hardware, it simplifies security management, reduces complexity, and enhances the overall security posture. This solution effectively mitigates risks associated with malware, ransomware, phishing, and data exfiltration, ensuring secure and reliable internet access for all users and devices.

Who Is the Company Behind Akamai Secure Internet Access Enterprise?

  • Seller: Akamai Technologies
  • Year Founded: 1998
  • HQ Location: Cambridge, MA
  • Twitter: @Akamai
    115,251 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    10,658 employees on LinkedIn®
  • Ownership: NASDAQ:AKAM

Armor2net Personal Firewall

Armor2net Personal Firewall is a network security software that stops hackers and data thieves and protects computers from Internet-borne threats.

Who Is the Company Behind Armor2net Personal Firewall?

AtomOS

AtomOS is a network security software that can support all of a company network and communications needs.

Who Is the Company Behind AtomOS?

BIG-IP Next Cloud-Native Network Functions (CNFs)

F5's BIG-IP Next Cloud-Native Network Functions are designed to provide scalable, secure, and efficient network services within Kubernetes environments. These CNFs enable service providers and enterprises to optimize their networks, reduce operational costs, and seamlessly scale to meet the demands of high-bandwidth applications, including AI workloads. By integrating essential network functions into a cloud-native architecture, BIG-IP Next CNFs facilitate the transition to modern, decentralized infrastructures. Key Features and Functionality: - Disaggregation : Enables horizontal scalability for dynamic traffic steering and resource optimization, ensuring efficient routing across CNF pods. - Accelerated DNS: Provides high-speed DNS query responses with caching and secure zone transfers, reducing latency and improving performance. - Unified Security Services: Combines firewall, DDoS mitigation, Intrusion Prevention System , and Carrier-Grade NAT functionalities for centralized management and robust protection. - Policy Enforcer: Integrates traffic optimization features such as video acceleration, URL filtering, and context-aware controls to enhance Quality of Experience and Average Revenue Per User . - Kubernetes-Native Automation: Utilizes Kubernetes-native APIs and Custom Resource Definitions for streamlined deployment, configuration, and management of network functions. Primary Value and Problem Solved: BIG-IP Next CNFs address the challenges faced by service providers and enterprises in managing complex, distributed network architectures. By consolidating critical network functions into a cloud-native framework, these CNFs reduce resource consumption, lower operational costs, and enhance scalability. The solution's independent scalability—allowing separate data and control plane scaling—ensures flexibility without bottlenecks, while its edge-ready and power-efficient architecture guarantees low latency and superior user experiences. Integrated security measures protect against large-scale network attacks, and Kubernetes-native automation streamlines workflows with API-driven deployments for faster, simplified operations.

Who Is the Company Behind BIG-IP Next Cloud-Native Network Functions (CNFs)?

  • Seller: F5
  • HQ Location: Seattle, Washington
  • Twitter: @F5Networks
    1,385 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    6,247 employees on LinkedIn®

Blackmirror Firewall

Blackmirror Firewall is a DOS/DDOS Protection Force-field, leveraging Windows Firewall and Cloudflares Edge (Cloudflare Tunnels is also recommended), securing servers at the perimeter on any and every port by monitoring, analyzing, detecting and blocking malicious attacks. Currently only supporting Windows. Cloudflare Tunnels: https://blackmirrorfirewall.com/how-to-install-cloudflare-tunnels/

Who Is the Company Behind Blackmirror Firewall?

CISCO1921-SEC/K9

CISCO121-SEC/K is a fixed, high-performance enterprise router featuring a resilient architecture with integrated security capabilities. Designed for demanding business environments, this router offers flexible power options via an internal AC power supply and provides dedicated WAN and LAN interfaces through 10/100 RJ-45 ports, ensuring streamlined connectivity for voice, video, and data services. Its integrated services include voice and video support as well as WAN optimization, making it a versatile solution for secure branch, remote office, and mid-sized enterprise deployments.

Who Is the Company Behind CISCO1921-SEC/K9?

Cisco Hypershield

Bringing the power of hyperscaler technology to the enterprise, Cisco Hypershield is a groundbreaking security architecture designed to defend modern, AI-scale data centers.

Who Is the Company Behind Cisco Hypershield?

  • Seller: Cisco
  • Year Founded: 1984
  • HQ Location: San Jose, CA
  • Twitter: @Cisco
    720,366 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    95,294 employees on LinkedIn®
  • Ownership: NASDAQ:CSCO
Lauren Worth
LW
Researched and written by Lauren Worth
Updated March 4, 2025