Best Firewall Software44Firewalls are designed to block unauthorized access to and from networks, but chiefly to stop Internet users from accessing private networks.Cisco ASA1https://media.trustradius.com/vendor-logos/KP/BJ/EKH5RFTLCO4X-180x180.PNGWatchGuard Network Security2https://media.trustradius.com/product-logos/5W/jq/VAPTVJ0UKFRX.JPEGFortinet FortiGate3https://media.trustradius.com/vendor-logos/MZ/NA/I0WLZ36A46RB-180x180.JPEGCisco Meraki MX Firewalls4https://media.trustradius.com/product-logos/xb/mX/4WFZL1ANOD5T.JPEGPalo Alto Networks Next-Generation Firewalls - PA Series5https://media.trustradius.com/product-logos/DS/BU/ULEO0WQAHCO8.PNGpfSense6https://media.trustradius.com/product-logos/1c/pa/ZO1A4AO15GEQ.JPEGSonicWall TZ7https://media.trustradius.com/vendor-logos/zc/Na/VOD2KUJ9G2Z3-180x180.JPEGSophos UTM8https://media.trustradius.com/vendor-logos/aW/xM/0AFACIEHNKRT-180x180.JPEGZscaler Web Security9https://media.trustradius.com/product-logos/IH/93/E4CITT6N520T.pngUntangle NG Firewall10https://media.trustradius.com/product-logos/1G/OL/1ZTB7ZMOO181.pngPalo Alto Networks WildFire11https://media.trustradius.com/product-logos/ej/jE/F7QTO7QIO9UF.PNGBarracuda CloudGen Firewall (formerly NG Firewalls)12https://media.trustradius.com/vendor-logos/cV/TT/VZW5UWK3DW36-180x180.JPEGWatchGuard XTM - Discontinued Product13https://media.trustradius.com/vendor-logos/T8/mJ/EAZDGZK4BJZG-180x180.PNGJuniper SRX14https://media.trustradius.com/vendor-logos/gB/Ia/1U86W7216QBM-180x180.PNGRackFoundry Total Security Management15https://media.trustradius.com/product-logos/Jl/h8/UUKVPXASSP28.PNGPalo Alto Networks Virtualized Next-Generation Firewalls - VM Series16https://media.trustradius.com/vendor-logos/MK/NG/UKHCVB1FA0XT-180x180.PNGStonesoft Firewall (Discontinued)17https://media.trustradius.com/vendor-logos/Ih/Yn/XPF0T8T20KCE-180x180.JPEGCyberoam18https://media.trustradius.com/product-logos/gY/sV/LUCR8FMGRNKH.jpegCisco Firepower NGFW (formerly Sourcefire)19https://media.trustradius.com/vendor-logos/KP/BJ/EKH5RFTLCO4X-180x180.PNGTrustwave Firewalls20https://media.trustradius.com/vendor-logos/2A/tk/VKTU2N003FWJ-180x180.jpgSmoothwall UTM21https://media.trustradius.com/vendor-logos/wS/uZ/14O7AMO40TQD-180x180.PNGCheck Point 2200 Appliances22https://media.trustradius.com/product-logos/uf/VE/F78KTIQOQ1MV.gifCheck Point 4000 Appliances23https://media.trustradius.com/vendor-logos/N5/Pq/9GTB1XOCNWCX.pngCheck Point Next Generation Firewall24https://media.trustradius.com/vendor-logos/N5/Pq/9GTB1XOCNWCX.pngCheck Point Firewall Software Blade25https://media.trustradius.com/product-logos/el/42/JT46P4SQMN0S.jpeg

Firewall Software

Best Firewall Software

TrustMaps are two-dimensional charts that compare products based on satisfaction ratings and research frequency by prospective buyers. Products must have 10 or more ratings to appear on this TrustMap.

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

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 a newer 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 (1-25 of 52)

WatchGuard Network Security

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57 Ratings

WatchGuard Network Security is a network security and firewall software. WatchGuard has been in the cyber security technology space for over 20 years. The vendor sees itself as a pioneer in the space, and aims to deliver easy-to-deploy and easy-to-manage solutions. In addition to network security...