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Free Forefront Threat Management Gateway Alternatives

The best free alternative to Forefront Threat Management Gateway is OPNsense, which is also Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Forefront Threat Management Gateway and six of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Forefront Threat Management Gateway are ClearOS, Sophos XG Firewall, ZeroShell and Smoothwall.

Forefront Threat Management Gateway alternatives are mainly Firewalls but may also be VPN Services or Operating Systems. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Forefront Threat Management Gateway .
This page was last updated Jul 2, 2022
  • Windows

Microsoft Forefront Threat Management Gateway (Forefront TMG), formerly known as Microsoft Internet Security and...

Learn more about Forefront Threat Management Gateway

  1. OPNsense

    • FreeOpen Source
    • Self-Hosted

    OPNsense includes most of the features available in expensive commercial firewalls, and more in many cases. It brings the rich feature set of commercial offerings with the benefits of open and verifiable sources.

  2. ClearOS

    • FreeOpen Source
    • Linux

    ClearOS is a family of operating systems for the enterprise, small business, and home. There are three editions to choose from depending on your needs and suitable to your abilities. They are: ClearOS Enterprise, ClearOS Home, and ClearOS Core.



  3. Sophos XG Firewall

    • Free PersonalProprietary
    • Self-Hosted

    A modern replacement for Sophos UTM based on Sophos, Cyberoam and Astaro technology combined.

  4. ZeroShell

    • FreeOpen Source
    • Linux
    • Self-Hosted

    Zeroshell is a Linux distribution for servers and embedded devices aimed at providing the main network services a LAN requires. It is available in the form of Live CD or Compact Flash image and you can configure and administer it using your web browser.

    Discontinued

    From the Zeroshell website (translated from Italian to English)Disposal of the Zeroshell projectThe project has now reached the end of its life. Zeroshell was born in June 2006 and has over 200,000 installations worldwide. Any security updates will be guaranteed until September 30, 2021. I thank everyone who believed and contributed in various ways to improving the project. The zeroshell.org domain will be divested or sold on September 30, 2021

  5. Smoothwall

    • FreeOpen Source
    • Linux

    The SmoothWall Open Source Project was set up to develop and maintain SmoothWall Express - a Free firewall that includes its own security-hardened GNU/Linux operating system and an easy-to-use web interface.

    Discontinued

    The site says the last release was October 2014.



  6. WinGate

    • FreemiumProprietary
    • Windows

    WinGate Proxy Server is a highly capable integrated Proxy server, firewall and email server designed for access control, security and communications needs. What you do get is all the features of Standard license for 3 concurrent users.

Showing 6 of 6 alternatives