Compare the Top On-Premises Firewall Software as of October 2025

What is On-Premises 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 On-Premises Firewall software currently available using the table below. This list is updated regularly.

  • 1
    Barracuda CloudGen Firewall
    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.
  • 2
    pfSense

    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.
  • 3
    Fortinet

    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.
  • 4
    Signal Sciences

    Signal Sciences

    Signal Sciences

    The leading hybrid and multi-cloud platform that provides next-gen WAF, API Security, RASP, Advanced Rate Limiting, Bot Protection, and DDoS purpose built to eliminate the challenges of legacy WAF. Legacy WAFs weren’t designed for today’s web apps that are distributed across cloud, on-premise or hybrid environments. Our next-gen web application firewall (NGWAF) and runtime application self protection (RASP) increase security and maintain reliability without sacrificing velocity, all at the lowest total cost of ownership (TCO).
  • 5
    OPNsense

    OPNsense

    OPNsense

    Simple packet filters are becoming a thing of the past. Even the open-source domain is moving towards Next-Generation Firewalls. And OPNsense is a top player when it comes to intrusion detection, application control, web filtering, and anti-virus. No network is too insignificant to be spared by an attacker. Even home networks, washing machines, and smartwatches are threatened and require a secure environment. Firewalls are a component of the security concept. They protect against known and new threats to computers and networks. A firewall offers the highest level of protection if its functions are known, its operation is simple, and it is ideally positioned in the surrounding infrastructure. OPNsense accepts the challenge and meets these criteria in different ways. This book is the ideal companion for understanding, installing and setting up an OPNsense firewall.
    Starting Price: Free
  • 6
    ditno

    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
  • 7
    enforza

    enforza

    enforza

    The cost-effective alternative to AWS Network Firewall, Azure Firewall, and cloud-native NAT Gateways. Same features. Less cost. No data processing charges. enforza is a cloud-managed firewall platform that helps you build a unified multi-cloud perimeter with powerful firewall, egress filtering and NAT Gateway capabilities. With easy cloud management at its core, enforza is truly multi-cloud, enabling you to apply consistent security policies across multiple clouds and regions. - Install the agent on *your* linux instance (cloud or on-prem) with one command. - Claim your device on the portal. - Manage your policies.
    Starting Price: $39/month/gateway
  • 8
    A10 Thunder ADC

    A10 Thunder ADC

    A10 Networks

    High-performance advanced load balancing solution that enables your applications to be highly available, accelerated, and secure. Ensure efficient and reliable application delivery across multiple datacenters and cloud. Minimize latency and downtime, and enhance end-user experience. Increase application security with advanced SSL/TLS offload, single sign-on (SSO), DDoS protection and Web Application Firewall (WAF) capabilities. Complete full-proxy Layer 4 load balancer and Layer 7 load balancer with flexible aFleX® scripting and customizable server health checks.
  • 9
    VyOS

    VyOS

    VyOS Networks

    Democratizing how we access networks through a universal router and open source software. Our vision at VyOS is to dramatically change how we access networks so that we can all build the solutions we always dreamed of, without restrictions, limitations, or prohibitive costs. We fundamentally believe that internet access is as vital to our human development as air, food, water, and healthcare. Built by engineers for engineers, VyOS is an open source software company that democratizes how we access networks so that the many, not the few, benefit from building solutions without limitations and prohibitive fees. We do this as VyOS through our open source software and virtual platforms. Stateful firewalls, zone-based firewall, all types of source and destination NAT (one to one, one to many, many to many). The entire codebase and build toolchain are available to everyone for auditing, building customized images and contributing.
    Starting Price: $1000
  • 10
    MobileWall

    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
  • 11
    AP Lens

    AP Lens

    AP Lens

    AP Lens is a Sandbox Browser that isolates networks using DNS Whitelisting. We stop the attack before it reaches the network. What does AP Lens provide? - Web Filtering: Flexible and user-friendly content blocking. - Anti-Phishing: Stop look-alike domains with 100% accuracy. - Ransomware Protection: Isolate the network without affecting business applications. - Secure Remote Work: Enforce internet usage policies without VPN slowness. - No More 0-Day Attacks: Escape the limits of blacklisting with AP Lens Augmented Whitelist. - Compliant: AP Lens meets regulatory requirements requested by cybersecurity insurance policies. - One-Click Installation: No need for a lengthy setup process or updating from the user's side. - No Maintenance: Stop malware and phishing without continuous monitoring. Our team builds on over 20 years of experience in cyber security, cloud security, and information protection in industries such as private banking and the public sector.
    Starting Price: $5
  • 12
    m0n0wall

    m0n0wall

    m0n0wall

    m0n0wall is a project aimed at creating a complete, embedded firewall software package that, when used together with an embedded PC, provides all the important features of commercial firewall boxes (including ease of use) at a fraction of the price (free software). m0n0wall is based on a bare-bones version of FreeBSD, along with a web server, PHP and a few other utilities. The entire system configuration is stored in one single XML text file to keep things transparent. m0n0wall is probably the first UNIX system that has its boot-time configuration done with PHP, rather than the usual shell scripts, and that has the entire system configuration stored in XML format.
    Starting Price: Free
  • 13
    Quantum Firewall Software R82
    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.
  • 14
    AT&T Premises-Based Firewall
    AT&T premises-based firewall service is a fully managed, network security service that provides the first layer of defense between a Local Area Network (LAN) and the Internet. Premises-based firewall service includes all hardware and software components, configuration, installation, and day-to-day management and maintenance as well as expert customer support and proactive network monitoring. You can choose from several premises-based firewall service solutions to meet your business requirements. They include systems from industry-leading providers from Fortinet®, Check Point®, Palo Alto Networks®, Cisco® and Juniper Networks®. As part of the premises-based firewall service, you can define your own security policy and tailor the solution to meet your business needs. The service also includes high-availability configurations, multi-gigabit throughput capacity, and advanced reporting.
  • 15
    Corsa Security

    Corsa Security

    Corsa Security

    Many large network owners still want a ‘private network’ approach for their network security to ensure data privacy, data sovereignty and low latency that meets their business needs and regulatory compliance requirements. But when it comes to on-premise firewalls, not much has evolved beyond introducing bigger and bigger hardware appliances. Corsa Security offers the first turnkey network security virtualization solution that helps large enterprises and service providers scale threat protection and automate firewall virtualization, at much lower total cost of ownership (TCO) by replacing their physical firewalls with virtual ones. By tightly integrating firewall virtualization with intelligent orchestration, the Corsa Security Orchestrator provides an aggregated view of all your virtual firewalls while managing their infrastructure health, capacity and performance.
  • 16
    AlgoSec

    AlgoSec

    AlgoSec

    Discover, map and migrate business application connectivity to the cloud. Proactively analyze security risk from the business perspective Automate network security policy changes - with zero touch Link cyber-attacks to business processes. Automatically discover, map, and securely provision network connectivity for business applications. Manage on-premise firewalls and cloud security groups in a single pane of glass. Automate the security policy change process – from planning through risk analysis, implementation and validation. Proactively assess every security policy change to minimize risk, avoid outages and ensure compliance. Automatically generate audit-ready reports and reduce audit preparation efforts and costs by up to 80%. Clean up firewall rules and reduce risk – without impacting business requirements.
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