Best Firewall Software44Firewalls are designed to block unauthorized access to and from networks, but chiefly to stop Internet users from accessing private networks.Check Point Firewall Software Blade1https://media.trustradius.com/vendor-logos/Tb/vB/CDDG6MZOH6BI-180x180.JPEGCheck Point Next Generation Firewall2https://media.trustradius.com/vendor-logos/Tb/vB/CDDG6MZOH6BI-180x180.JPEG3Com Firewall (Discontinued)3https://media.trustradius.com/vendor-logos/GB/WA/AD35SXDCUJ9A-180x180.PNGCheck Point VSX4https://media.trustradius.com/vendor-logos/Tb/vB/CDDG6MZOH6BI-180x180.JPEGCheck Point UTM-15https://media.trustradius.com/vendor-logos/Tb/vB/CDDG6MZOH6BI-180x180.JPEGStonesoft Next Generation Firewall (Discontinued)6https://media.trustradius.com/vendor-logos/Ih/Yn/XPF0T8T20KCE-180x180.JPEGStormshield Network Security7https://media.trustradius.com/product-logos/gU/s3/UTFT1PM756TV.jpegA10 Thunder CFW8https://media.trustradius.com/vendor-logos/bJ/Q5/99PWRVRE6VM1-180x180.PNGR&S Unified Firewall9https://media.trustradius.com/vendor-logos/t1/03/GW9B3JVCDZK1-180x180.JPEGCenturyLink Adaptive Network Security Services10https://media.trustradius.com/vendor-logos/OK/UO/KTW2ZSTJRMM2-180x180.JPEGHuawei Unified Security Gateway11https://media.trustradius.com/vendor-logos/AG/vw/4MOX29P1S10T-180x180.JPEGHillstone T-Series Intelligent Next-Generation Firewalls (NGFW)12https://media.trustradius.com/vendor-logos/8a/XH/8KXSWQW27BJ6-180x180.JPEGHillstone X-Series Data Center Next-Generation Firewall13https://media.trustradius.com/vendor-logos/8a/XH/8KXSWQW27BJ6-180x180.JPEGSonicWall E10000 Series14https://media.trustradius.com/vendor-logos/zc/Na/VOD2KUJ9G2Z3-180x180.JPEGSonicWall SuperMassive 9000 Series15https://media.trustradius.com/vendor-logos/zc/Na/VOD2KUJ9G2Z3-180x180.JPEGComodo Firewall16https://media.trustradius.com/vendor-logos/QG/sV/G1522B0P2EWE-180x180.JPEGSangfor NGAF17https://media.trustradius.com/vendor-logos/vy/hl/2GZ3GG424F04-180x180.PNGAhnLab TrusGuard18https://media.trustradius.com/vendor-logos/BO/GF/E2B5C4206AQR-180x180.PNGH3C SecPath19https://media.trustradius.com/vendor-logos/GB/WA/AD35SXDCUJ9A-180x180.PNGAzure Firewall20https://media.trustradius.com/vendor-logos/tf/J4/RTX1AO2GSVNS-180x180.JPEGKerio Control21https://media.trustradius.com/product-logos/Q3/n3/PEMT3KZS1HU7-180x180.JPEGSophos XG Firewall22https://media.trustradius.com/vendor-logos/aW/xM/0AFACIEHNKRT-180x180.JPEGAvast Secure Internet Gateway (SIG)23https://media.trustradius.com/vendor-logos/xg/DL/SF4RJLFA8RUQ-180x180.JPEGCisco Meraki Z3 Teleworker24https://media.trustradius.com/vendor-logos/KP/BJ/EKH5RFTLCO4X-180x180.PNGCisco Firepower 1000 Series25https://media.trustradius.com/vendor-logos/KP/BJ/EKH5RFTLCO4X-180x180.PNG

Best Firewall Software

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Firewall Software Overview

What are Firewall Software?

Firewalls are filters that stand between a computer or computer network and the Internet. Each firewall can be programmed to keep specific traffic in or out. All messages passing through the firewall are examined and those not meeting pre-defined security criteria are blocked.


For example, on the outbound side, firewalls can be configured to prevent employees from transmitting sensitive data outside the network, while on the inbound side, firewalls can be configured to prevent access to certain kinds of websites like social media sites.

Firewall Software Features & Capabilities

  • Application visibility and control

  • Identify and control evasive app threats

  • Intrusion Prevention integration

  • Physical and virtual environment support

  • Integration with LDAP and Active Directory

  • "Sandbox," or isolated, cloud-based threat emulation

Firewall vendors are beginning to bundle firewall offerings with other security or privacy features, although this is not a universal practice. The most common example is support for Virtual Private Networks (VPN), and load-management is often featured as well.

Firewall methods

Firewalls use several methods to control traffic flowing in and out of a network:


  • Packet filtering: This method analyzes small pieces of data against a set of filters. Those that meet the filter criteria are allowed to pass through, while others are discarded.

  • Proxy service: In this method, computers make a connection to the proxy which then initiates a new network connection based on the content of the request. In this way, there is no direct connection or packet transfer on either side of the firewall. Network addresses are effectively hidden.

  • Stateful inspection: Stateful inspection is the new standard firewall security method that monitors communications packets over a period of time. Outgoing packets that request specific types of incoming packets are tracked. Only incoming packets that are an appropriate response are allowed to pass. Firewalls using this method are often referred to as next-generation firewalls (NGFW).

Pricing Information

The cost of firewalls can vary from free (for personal use) to significant sums of money for enterprise firewalls. Firewalls are often on-premise appliances, but can also be purchased as software which must be installed on a server, or as a cloud service. The range of pricing models is broad making it difficult to compare across vendors. However, an enterprise firewall may cost upwards of $30,000, depending on capability and type.

Firewall Products

Listings (26-50 of 59)

We don't have enough ratings and reviews to provide an overall score.

Check Point VSX is a firewall option, from Check Point Software Technologies in San Carlos, California.

We don't have enough ratings and reviews to provide an overall score.

The Stormshield Network Security is the company's line of SN series Next-Generation Firewalls (NGFW). The SN series is based on the NETASQ Firewalls acquired and merged into Stormshield after that company was formed from the merger of the original companies Netasq and Arkoon.

We don't have enough ratings and reviews to provide an overall score.

A10 Networks offers A10 Thunder CFW (for Convergent Firewall), a combined firewall and secure web gateway.

We don't have enough ratings and reviews to provide an overall score.

Comodo Cybersecurity headquartered in New Jersey offers the Comodo Firewall to deliver security controls to moderate size businesses.

We don't have enough ratings and reviews to provide an overall score.

Sangfor NGAF is a combined NGFW and Web Application Firewall. It provides a full core suite of firewall services scaled for enterprises.

We don't have enough ratings and reviews to provide an overall score.

Korean company AhnLab offers TrusGuard, an integrated firewall, IPS, VPN, anti-virus, and anti-spam security appliance featuring DDoS protection and secure connectivity with internal systems through an IPSec/SSL VPN.

We don't have enough ratings and reviews to provide an overall score.

H3C provides network security via its SecPath next-generation firewall (NGFW) series.

We don't have enough ratings and reviews to provide an overall score.

Microsoft's Azure Firewall is a managed cloud-based network security service that protects Azure Virtual Network resources.

We don't have enough ratings and reviews to provide an overall score.

Kerio Control is a next-gen firewall for SMBs, from Aurea SMB Solutions (formerly GFI Software).

We don't have enough ratings and reviews to provide an overall score.

Sophos XG Firewall provides comprehensive next-generation firewall protection powered by deep learning and Synchronized Security. The vendor states XG Firewall supplies unmatched insights and exposes hidden user, application, and threat risks on the network, and say the product is differentiated ...

We don't have enough ratings and reviews to provide an overall score.

Avast Business Secure Internet Gateway (SIG) is designed to replace traditional hardware by delivering cloud-based firewall capabilities from Avast's global cloud network. The service ensures network security is always on, always updating, and always protecting the business. SIG is built to elimi...

We don't have enough ratings and reviews to provide an overall score.

Cisco Meraki Z3 Teleworker is an enterprise class firewall, VPN gateway and router. Each model offers five gigabit ethernet ports and wireless for connectivity. Each model is designed to securely extend the power of Meraki cloud managed networking to employees, IT staff, and executives working fr...

We don't have enough ratings and reviews to provide an overall score.

The Cisco Firepower® 1000 Series for small to medium-size businesses and branch offices is a family of four threat-focused Next-Generation Firewall (NGFW) security platforms designed to deliver business resiliency through superior threat defense. The vendor provides that they offers exceptional s...

Frequently Asked Questions


What is a firewall?

A firewall is a filter that stands between a computer or computer network and the Internet. It monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of rules. All messages passing through the firewall are examined and those not meeting pre-defined security criteria are blocked.

What are the main types of firewall?

There are four major types.

  • Packet Filtering: Small pieces of data are analyzed against a set of filters and are either allowed to pass through or are discarded.
  • Proxy Firewall: A proxy firewall serves as the gateway from one network to another. Computers make a connection to the proxy which then initiates a new network connection based on the content of the request.
  • Stateful Inspection: Stateful inspection monitors the state of active connections and uses this information to determine which network packets to allow through. Decisions on what to allow through are based on a combination of defined rules and context.
  • Next-Generation Firewall (NGFW): Next-generation firewalls go beyond packet filtering and stateful inspection. They have additional capabilities in order to help combat more modern threats like malware.

What’s the difference between a hardware and a software firewall?

Firewall hardware and firewall software both perform the same task; they both act as barriers between the internet and the computer and they both help to protect from anything that can harm the computer from an outside connection. Hardware firewalls offer network-wide protection from external threats. Software firewalls installed on individual computers are capable of closer data inspection and can block specific programs from sending data to the Internet.

What additional capabilities do next-generation firewalls have?

Next-generation firewalls are an acknowledgement that standard firewall capabilities are insufficient, and they typically include other related technologies such as: intrusion protection systems, deep packet inspection, SSL-encrypted traffic termination, and sandboxing.

How much do firewalls cost?

The cost of firewalls can vary from free (for personal use) to significant sums of money for enterprise firewalls. The range of pricing models is broad making it difficult to compare across vendors. However, an enterprise firewall may cost upwards of $30,000, depending on capability and type.