10 Best Open Source Firewalls 2020

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

After analyzing 83 products, scanning 415 reviews, spending more than 36 hours of research and speaking with our test users, we think the Ubiquiti Unifi Security Gateway (USG) is the one of the Best Open Source Firewall on the market.

# Image Name Brand Price
1
⭐Best Choice
Ubiquiti Unifi Security Gateway (USG)
Ubiquiti Unifi Security Gateway (USG) Check price Ubiquiti Networks $$$$$ Check price
2 monitor-io: Continuously Monitor Your Internet Service and IoT Connectivity monitor-io: Continuously Monitor Your Internet Service and IoT Connectivity - for Homes, Businesses, and Installers | Receive Service and Device Alerts | Remotely Diagnose Issues | No Monthly Fee Check price N/A $$$$$ Check price
3 OPNsense Fanless Compact Open Source Freebsd Firewall Solution OPNsense Fanless Compact Open Source Freebsd Firewall Solution, 4 x Intel GbE LAN Check price N/A $$$$$ Check price
4 Turris Omnia 2 GB Wi-Fi high performance Turris Omnia 2 GB Wi-Fi high performance, open source & WiFi router / NAS / printserver / virtual server, CPU 1.6 GHz dual-core, 5x GLAN, 2x USB 3.0 Check price N/A $$$$$ Check price
5
💲Best value for the money
【High Speed】 Dual Band 1200Mbps WiFi Router
【High Speed】 Dual Band 1200Mbps WiFi Router, AC1200 Smart WiFi Router, Long Range Wireless WiFi Router for Multiple Devices, Open Source OpenWRT WE1326, Home Office Wireless WiFi Router Check price N/A $$$$$ Check price
6 Protectli Vault 4 Port Protectli Vault 4 Port, Firewall Micro Appliance/Mini PC - Intel Quad Core, AES-NI, 4GB RAM, 32GB mSATA SSD Check price Protectli $$$$$ Check price
7 Protectli Vault 2 Port Protectli Vault 2 Port, Firewall Micro Appliance/Mini PC - Intel Dual Core, AES-NI, 8GB RAM, 120GB mSATA SSD Check price Protectli $$$$$ Check price
8
👑Premium Pick
Protectli Vault 6 Port
Protectli Vault 6 Port, Firewall Micro Appliance/Mini PC - Intel Dual Core i5, AES-NI, Barebone Check price Protectli $$$$$ Check price
9 Firewalla Red: Cyber Security Firewall for Home & Business Firewalla Red: Cyber Security Firewall for Home & Business, Protect Network from Viruses & Malware | Parental Control | Block Ads | Free VPN Server | Connects to Router | No Monthly Fee | 100Mb IPS Check price Firewalla $$$$$ Check price
10 Protectli Vault 4 Port Protectli Vault 4 Port, Firewall Micro Appliance/Mini PC - Intel Quad Core, 8GB RAM, 128GB mSATA SSD Check price Protectli $$$$$ Check price

Ubiquiti Unifi Security Gateway (USG) – Best Overall Open Source Firewall

Ubiquiti Unifi Security Gateway (USG)
  • 3 Gigabit Ethernet ports, CLI management for advanced users
  • 1 million packets per second for 64-byte packets
  • 3 Gbps total line rate for packets 512 bytes or larger
  • Integrated and managed with UniFi Controller v4.x
  • Secure off-site management and monitoring, Silent, fanless operation

monitor-io: Continuously Monitor Your Internet Service and IoT Connectivity

monitor-io: Continuously Monitor Your Internet Service and IoT Connectivity
  • CONTINUOUSLY MONITOR YOUR INTERNET CONNECTION: NOT based on speed tests or pings - uses advanced TCP and UDP testing to detect connectivity and performance issues in near real-time. Obtain information on connectivity interruptions, packet loss, delay variation and overall degradation.
  • TROUBLESHOOT YOUR NETWORK: Review the history of outages and degradation. Troubleshoot and segment issues in your network, even when you lose internet connectivity. Get a visual status of your network connectivity from across the room.
  • TRACK IoT DEVICE CONNECTIVITY: See when essential IoT devices are offline and when they are back online. See the pattern of online activity by device.
  • NOTIFICATIONS: Receive alert notifications for internet degradation, unknown devices joining your network, essential devices dropping off, etc.
  • SECURE AND EASY TO INSTALL: No special skills or router configuration needed. Just plug the device into your router and you are ready to go (after completing the registration). Following a strict do-no-harm presence on your network, there is absolutely NO ARP spoofing or ARP cache poisoning, NO interference with normal DHCP operation, NO changes to standard routing, NO inspection or processing of user data, and NO configuration changes to your router.

OPNsense Fanless Compact Open Source Freebsd Firewall Solution

OPNsense Fanless Compact Open Source Freebsd Firewall Solution
  • OPNsense Open Source FreeBSD-based Firewall
  • Intel Celeron N3160 Quad Core Processor
  • Includes 4GB Memory, 60GB M.2 SSD
  • 4 x Intel GbE LAN Ports
  • Fanless Compact Form Factor: 5.08" x 4.31" x 1.34"

Turris Omnia 2 GB Wi-Fi high performance

Turris Omnia 2 GB Wi-Fi high performance
  • More than just a router. The open-source center of your home.
  • Performance: High power dual-core ARM CPU at 1.6 GHz with PC-like performance
  • Security: Secure default configuration, easy setup and automatic updates
  • Dual-Band Wi-Fi, 3×3 MIMO 802.11ac, 2×2 MIMO 802.11b/g/n, CPU ARM 1.6GHz Dual-core, 2GB RAM, 8 GB flash, 2x USB 3.0, 1x GWAN, 5x GLAN, 1xSFP, 3x Mini PCI Express ( 1x mSATA ), SIM card slot, Cryptochip, Turris OS
  • Open hardware running Open source operating system Turris OS based on OpenWrt

【High Speed】 Dual Band 1200Mbps WiFi Router – Best Budget Open Source Firewall

【High Speed】 Dual Band 1200Mbps WiFi Router
  • WiFi Router (ZBT-WE1326) Open Source OpenWRT for better performance and efficiency come with MT7621 Dual core 880MHz, RAM: 256MB, ROM: 16MB, 802.11ac/a/b/g/n.
  • Our wifi router model ZBT-WE1326 delivers fast data rates with speeds up to 1200Mbps, 300Mbps on 2.4Ghz+867Mbps on 5.8Ghz concurrent dual band, ideal for online gaming, HD streaming and large file downloads.
  • Ultrafast WiFi speed 1200 Mbps WiFi speed to handle even the whole home with more than six rooms and small business network with ease.
  • Full 10/100/1000Mbps ethernet ports, stable and blazing fast.
  • Advanced features includes parental controls and Mac/IP filters as well as dual-band, guest network, and dual-active firewall features.

Protectli Vault 4 Port

Protectli Vault 4 Port
  • THE VAULT: Secure your network with a compact, fanless & silent firewall. Comes with US-based Support & 30-day money back guarantee!
  • CPU: Intel Quad Core Celeron J3160, 64 bit, up to 2.2GHz, AES-NI hardware support
  • PORTS: 4x Intel i210 Gigabit Ethernet ports, 2x USB 3.0, 1x RJ-45 COM, 2x HDMI
  • COMPONENTS: 4GB DDR3L RAM, 32GB mSATA SSD. coreboot BIOS optional, must be installed by user.
  • COMPATIBILITY: No OS pre-installed. All hardware tested with pfSense, untangle, OPNsense and other popular open-source software solutions.

Protectli Vault 2 Port

Protectli Vault 2 Port
  • THE VAULT: Secure your network with a compact, fanless & silent firewall. Comes with US-based Support & 30-day money back guarantee!
  • CPU: Intel Dual Core Celeron, 64 bit, up to 2.48GHz, AES-NI hardware support
  • PORTS: 2x Intel i211 Gigabit Ethernet NIC ports, 4x USB 2.0, 2x USB 3.0, 1x RJ-45 COM, 2x HDMI
  • COMPONENTS: 8GB DDR3L RAM, 120GB mSATA SSD. coreboot BIOS optional, must be installed by user.
  • COMPATIBILITY: No OS pre-installed. All hardware tested with pfSense, untangle, OPNsense and other popular open-source software solutions.

Protectli Vault 6 Port – Premium Pick

Protectli Vault 6 Port
  • THE VAULT: Secure your network with a compact, fanless & silent firewall. Comes with US-based Support & 30-day money back guarantee!
  • CPU: Intel Dual Core i5 7200U, 64 bit, up to 3.1GHz, 3MB Smart Cache, Intel AES-NI hardware support
  • PORTS: 6x Intel Gigabit Ethernet NIC ports, 4x USB 3.0, 1x RJ-45 COM, 1x HDMI
  • COMPONENTS: Barebones for maximum customizability (no RAM or mSATA). coreboot BIOS optional, must be installed by user.
  • COMPATIBILITY: No OS pre-installed. All hardware tested with pfSense, untangle, OPNsense and other popular open-source software solutions.

Firewalla Red: Cyber Security Firewall for Home & Business

Firewalla Red: Cyber Security Firewall for Home & Business
  • COMPATIBILITY: This is * Firewalla RED * (NOT THE FIREWALLA BLUE), The IPS functionality is limited to 100 Mbits. This device may not be compatible with all routers. Please look at the "specification sheet" document in this listing, or compatibility guide in the manufacturing site for routers that works with Firewalla. May require login to router and do basic configuration.
  • COMPLETE CYBERSECURITY PROTECTION - Firewalla's unique intrusion prevention system (IDS and IPS) protects all of your home wire and wireless internet of things devices from threats like viruses, malware, hackng, phishing, and unwanted data theft when you’re using public WiFi. It’s the simple and affordable solution for families, professionals and businesses. Let Firewalla’s built-in OpenVPN server keeps your device usage as secure as it is in your home.
  • PARENTAL CONTROL AND FAMILY PROTECT - The days of pulling the power cord from the dusty old router are behind you; with just a few taps on the smartphone, you can see what they’re doing, cut off all access, or cut off only gaming or social networks. Turn on Family Protect to filter and block adult and malicious content, keep internet activities healthy and safe.
  • EASY TO INSTALL - Get Firewalla up and running as easy as 1-2-3! No special skills or tech know-how required: just connect to your wifi router and a power source, launch the app on your mobile device, and scan the barcode to get started. With this, you have the power to monitor and manage your device from anywhere in the world. App is available for both iPhone and Android. Please see manufacturing web site for router compatibility
  • DEEP INSIGHT - Firewalla uses deep insight and cloud-based behavior analytics engines to actively detect and automatically block problems as they arise. From this continuous monitoring, you’ll have full visibility of activities across all your iot devices and the ability to identify full network flows, bandwidth analysis, and internet troubleshooting. Keeping your internet secure, and hack free.

Protectli Vault 4 Port

Protectli Vault 4 Port
  • THE VAULT: Secure your network with a compact, fanless & silent firewall. Comes with US-based Support & 30-day money back guarantee!
  • CPU: Intel Quad Core Celeron J1900, 64 bit, 2.0GHz, 2MB L2 Cache
  • PORTS: 4x Intel Gigabit Ethernet NIC ports, 1x USB 2.0, 1x USB 3.0, 1x RJ-45 COM, 1x VGA
  • COMPONENTS: 8GB DDR3L RAM, 128GB mSATA SSD
  • COMPATIBILITY: No OS pre-installed. All hardware tested with pfSense, untangle, OPNsense and other popular open-source software solutions.

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