Browse free open source Firewall software and projects below. Use the toggles on the left to filter open source Firewall software by OS, license, language, programming language, and project status.

  • Find Hidden Risks in Windows Task Scheduler Icon
    Find Hidden Risks in Windows Task Scheduler

    Free diagnostic script reveals configuration issues, error patterns, and security risks. Instant HTML report.

    Windows Task Scheduler might be hiding critical failures. Download the free JAMS diagnostic tool to uncover problems before they impact production—get a color-coded risk report with clear remediation steps in minutes.
    Download Free Tool
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    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
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  • 1

    UPnP PortMapper

    Manage port forwardings via UPnP

    The UPnP PortMapper can be used to easily manage the port mappings/port forwarding of a UPnP enabled internet gateway/router in the local network.
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    Downloads: 308 This Week
    Last Update:
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  • 2
    IPCop Firewall

    IPCop Firewall

    Linux firewall distribution geared towards home and SOHO users.

    The IPCop Firewall is a Linux firewall distribution. It is geared towards home and SOHO users. The IPCop web-interface is very user-friendly and makes usage easy.
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    Downloads: 128 This Week
    Last Update:
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  • 3
    Endian Firewall Community
    Endian Firewall Community (EFW) is a "turn-key" linux security distribution that makes your system a full featured security appliance with Unified Threat Management (UTM) functionalities. The software has been designed for the best usability: very easy to install, use and manage and still greatly flexible. The feature suite includes stateful packet inspection firewall, application-level proxies for various protocols (HTTP, FTP, POP3, SMTP) with antivirus support, virus and spam-filtering for email traffic (POP and SMTP), content filtering of Web traffic and a "hassle free" VPN solution (based on both OpenVPN and IPsec).
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    Downloads: 295 This Week
    Last Update:
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  • 4
    BASE is the Basic Analysis and Security Engine. It is based on the code from the Analysis Console for Intrusion Databases (ACID) project. This application provides a web front-end to query and analyze the alerts coming from a SNORT IDS system.
    Downloads: 6 This Week
    Last Update:
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  • Atera - The depth of a full-stack IT platform, with the power of AI. Icon
    Atera - The depth of a full-stack IT platform, with the power of AI.

    Atera introduces your autonomous AI agent - Ensure operational efficiency at any scale with 24/7 autonomous IT support.

    Atera prioritizes security and compliance through robust protections that align with industry standards. Our AI-driven features were built on responsible AI principles and empower IT teams to work efficiently while maintaining trust and compliance.
    Learn More
  • 5
    MailCleaner

    MailCleaner

    Anti Spam SMTP Gateway

    MailCleaner Open Source Edition is now discontinued but will continue under the spamtagger project https://github.com/SpamTagger [antispam] MailCleaner is an anti-spam / anti-virus filter SMTP gateway with user and admin web interfaces, quarantine, multi-domains, multi-templates, multi-languages. Using Bayes, RBLs, Spamassassin, MailScanner, ClamAV. Based on Debian. Enterprise ready. MailCleaner is an anti spam gateway installed between your mail infrastructure and the Internet. It includes a complete GNU/Linux OS and a graphical web interface for user and administrative access. It comes in the form of virtual machine templates.. - fully compatible with any SMTP mail server (Exchange, Zimbra, O365,...)
    Downloads: 5 This Week
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  • 6
    Addons for IOSEC - DoS HTTP Security

    Addons for IOSEC - DoS HTTP Security

    IOSec Addons are enhancements for web security and crawler detection

    IOSEC PHP HTTP FLOOD PROTECTION ADDONS IOSEC is a php component that allows you to simply block unwanted access to your webpage. if a bad crawler uses to much of your servers resources iosec can block that. IOSec Enhanced Websites: https://www.artikelschreiber.com/en/ https://www.unaique.net/en/ https://www.unaique.com/ https://www.artikelschreiber.com/marketing/ https://www.paraphrasingtool1.com/ https://www.artikelschreiben.com/ https://www.buzzerstar.com/ https://iosecaddons.sourceforge.io/ https://www.artikelschreiber.com/opensource/ https://www.sebastianenger.com/ Added Setup Instructions for Wordpress Content Management System. Added Facebook Bot Support for "Facebot/1.0". Add this code to your website to prevent unauthorized stealing of your valuable content & block malicious bots from crawling your site.
    Downloads: 3 This Week
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  • 7
    OpenFirewall (only for windows XP)
    Only for windows XP OpenFirewall is based on two lines of defence first WIPFW ( Kernel-mode driver ) and second tdifw ( application-mode TDI-driver ) . Is a Windows firewall easy to use like the commercial products
    Downloads: 3 This Week
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  • 8
    nf-HiPAC is a high performance packet filter for Linux. It provides the same rich feature set as iptables but uses an advanced algorithm to minimize the number of memory lookups per packet.
    Downloads: 1 This Week
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  • 9
    JWall is not just a java gui for iptables. JWall is a multi firewall management client. A secure rulebase can be built with graphical objects. Rulesets can be pushed to remote firewalls (via ssh). The remote firewall just needs to be Linux with sshd
    Downloads: 1 This Week
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  • Smart Business Texting that Generates Pipeline Icon
    Smart Business Texting that Generates Pipeline

    Create and convert pipeline at scale through industry leading SMS campaigns, automation, and conversation management.

    TextUs is the leading text messaging service provider for businesses that want to engage in real-time conversations with customers, leads, employees and candidates. Text messaging is one of the most engaging ways to communicate with customers, candidates, employees and leads. 1:1, two-way messaging encourages response and engagement. Text messages help teams get 10x the response rate over phone and email. Business text messaging has become a more viable form of communication than traditional mediums. The TextUs user experience is intentionally designed to resemble the familiar SMS inbox, allowing users to easily manage contacts, conversations, and campaigns. Work right from your desktop with the TextUs web app or use the Chrome extension alongside your ATS or CRM. Leverage the mobile app for on-the-go sending and responding.
    Learn More
  • 10
    Kwickserver is a do-it-yourself Firewall appliance optimized for educational use, but can be used in all other scenarios. It installs automatically from CD on your HD and is administered via webinterface. Download it from the project homepage!
    Downloads: 1 This Week
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  • 11
    yafig is a LAMP-based firewall rule generator.
    Downloads: 1 This Week
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  • 12
    Downloads: 1 This Week
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  • 13
    Anoubis is a Security Suite which implements a secured environment for applications. The core of the suite is an Application Firewall alongside with a Sandbox. Mechanisms to assure the authenticity of files, directories and applications are provided.
    Downloads: 0 This Week
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  • 14
    This tools help you migrating existing Checkpoint Firewall 1 Installation and Rulesets to Linux or *BSD based Firewall. This is done by converting the Rulebase- and the Objects- Database from Checkpoint to the FirewallBuilder XML Format.
    Downloads: 0 This Week
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  • 15
    FireConfig is a PHP Frontend for Iptables and Iproute (Iproute2)
    Downloads: 0 This Week
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  • 16
    The fwb-optimizer is and firewall rule optimizer writen in perl/xml::twig. It resolves negativ rules, groups and delete redudant rules, and it is possible to sort often used rules up, for more performance.
    Downloads: 0 This Week
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  • 17
    GTCop Professional Security Appliance aims to provide a powerful tool for satellite communications, with enhanced QoS and bandwidth controls. As derived from IPCop Firewall, it is a stable, secure, easy to configure and maintain GNU/Linux firewall box.
    Downloads: 0 This Week
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  • 18
    HLBR is an IPS (Intrusion Prevention System) that can filter packets in the OSI layer 2. Detection of malicious traffic is done by rules. It can even be used as bridge to honeypots. The HLBR is a firewall element and can use regular expressions. Warning: this project was discontinued and should not be used in production networks. There are several bugs.
    Downloads: 0 This Week
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  • 19
    IP-Updater is a Perl-Script to manage dynamic IP-adresses (DynDNS). It reads the IP via Telnet from the Router (Zyxel, Netgear) or get it from the web. Different updates to Dyn-IP-Services or FTP-Upload to a hompage are possible. With logging.
    Downloads: 0 This Week
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  • 20
    ISECOM is a non-profit research initiative applying open community cooperation to develop methodologies.
    Downloads: 0 This Week
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  • 21
    Jateway

    Jateway

    Jateway is a general purpose TCP/IP connection proxy

    Jateway is a general purpose TCP/IP connection proxy. Jateway accepts connections on arbitrary ports (like 80 or 443) and specific host:port combinations (like WANIP1:443 and WANIP2:443) for multi-interface systems Supports single TCP connections (like MySQL), and multi-TCP connections like HTTP and HTTPS, and fowards them to arbitrary host/port combinations.
    Downloads: 0 This Week
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  • 22
    linux4501 is a linux software distribution for the soekris net4501 single board PC (see www.soekris.com). It fits on a 16 or 32 MB Compactflash card and turns the 4501 into a firewall and (dsl) router. It can also be used as a starting point for your ow
    Downloads: 0 This Week
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  • 23
    Internet Control Firewall Intrusion Detection and Logger for Inbound and Outbound Traffic. Watches Files and Directories, Drive and Memory Protection.
    Downloads: 0 This Week
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  • 24
    This project wants to provide useful tools for routing simple small private networks using a dial-up or broadband link. These tools consist of firewall and traffic shaping tools currently. Any feedback is welcome.
    Downloads: 0 This Week
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  • 25
    Security-Tools Database is an easy to use tool to manage tool-tipps (e.g. from the SecurityFocus.com Newsletters and other sources). Simply copy + paste tipps from the newsletter or enter tipps manually. Finds tools by any combinations of search criteria.
    Downloads: 0 This Week
    Last Update:
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