The 1 Best Open-Source Firewall Appliance That Offers Top-Notch Security

For most home labs and small networks, I’d start with the Protectli Vault V1610: six 2.5GbE ports and 16GB of RAM give it the most room for growth in this lineup. The Protectli Vault V1210 with 500GB NVMe is a capable two-port alternative, while the SJRC six-port model pairs multiple 2.5GbE connections with a Core i3 processor. The main tradeoff is between port count and performance on one side, and size, power needs, and spending on capacity you may not use on the other. These appliances are hardware platforms, not preinstalled firewall systems, so check software compatibility before choosing. Read on for my full comparison, selection criteria, and advice for matching an appliance to your network.

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Key Takeaways

• The V1610 is the lineup’s strongest growth pick: its six 2.5GbE ports, 16GB RAM, and 500GB NVMe provide more headroom than the dual-port and older-generation options.
• Two ports can be enough: the V1210 models suit a basic router-and-firewall role, but their storage differs substantially between the 500GB NVMe version and the 32GB eMMC version.
• Port count alone does not make a model faster: the SJRC combines six 2.5GbE ports with a Core i3-8130U, while the V1610 offers a newer N6005 platform and 16GB RAM; workload and software compatibility matter.
• Several Protectli models share names but not configurations: the FW2B appears with different memory, storage, and processor details, so buyers should verify the exact listing rather than rely on the family name.
• The lower-capacity models call for more planning: 32GB storage or a barebone configuration may fit a lean setup, but added packages, logs, or future services can make limited storage and memory restrictive.

Our Top Opensource Firewall Appliances Picks

Protectli Vault FW2B Fanless Firewall Mini PC, Intel Dual-Core, 4GB RAM, 32GB SSD		Best Compact Entry-Level Pick	Processor: Intel Celeron J3060 dual-core, 1.6 GHz (up to 2.48 GHz)	Memory: 4GB DDR3L RAM	Storage: 32GB mSATA SSD	VIEW ON AMAZON	See Our Full Breakdown
Protectli Vault V1210 Mini PC with Intel N5105, Dual 2.5GbE NICs, 4GB RAM, and 500GB NVMe SSD		Best for a Compact 2.5GbE Upgrade	Processor: Intel N5105 quad-core, 2.0 GHz (up to 2.9 GHz)	Network: 2 x Intel I226-V 2.5GbE ports	Memory: 4GB onboard LPDDR4	VIEW ON AMAZON	See Our Full Breakdown
Protectli Vault FW4B 4-Port Firewall Appliance with Intel Quad-Core Celeron, 8GB RAM, and 120GB SSD		Best Overall for Gigabit Open-Source Firewalls	Processor: Intel Celeron J3160 quad-core, up to 2.2 GHz	Memory: 8GB DDR3L RAM	Storage: 120GB mSATA SSD	VIEW ON AMAZON	See Our Full Breakdown
VNOPN Fanless Firewall Appliance, Intel J3710, 4 Intel I226 LAN Ports, 8GB RAM, 64GB mSATA SSD		Best Low-Power Four-Port Option	Processor: Intel J3710, 4 cores/4 threads, up to 2.64 GHz	Memory: 8GB DDR3 RAM; maximum 8GB	Storage: 64GB mSATA SSD; supports up to 512GB; HDD not supported	VIEW ON AMAZON	See Our Full Breakdown
Protectli Vault V1610 Mini PC with Intel N6005, 6× 2.5GbE Ports, 16GB RAM, and 500GB NVMe SSD		Best for Multi-Gigabit, Multi-Segment Networks	Processor: Intel Celeron N6005 quad-core, 2.0 GHz (up to 3.3 GHz)	Network ports: 6 x Intel I226-V 2.5GbE	Memory: 16GB onboard LPDDR4	VIEW ON AMAZON	See Our Full Breakdown
Protectli Vault V1210 Mini PC with Intel N5105, Dual 2.5GbE Ports, 4GB RAM and 32GB eMMC		Best Compact 2.5GbE Starter	Processor: Intel N5105 quad-core, 2.0GHz up to 2.9GHz	Network: 2 × Intel I226-V 2.5GbE	Memory: 4GB onboard LPDDR4	VIEW ON AMAZON	See Our Full Breakdown
SJRC Fanless Firewall Mini PC, Core i3-8130U, 8GB RAM, 128GB SSD, 6-Port 2.5GbE		Best for Multi-Segment Networks	Processor: Intel Core i3-8130U, 2 cores / 4 threads, up to 3.40GHz	Ethernet: 6 × 2.5GbE Intel I226-V	Memory: 8GB DDR3L SODIMM; supports up to 16GB	VIEW ON AMAZON	See Our Full Breakdown
Protectli Vault FW2B Fanless Firewall Mini PC, Intel Dual-Core, 8GB RAM, 120GB mSATA SSD		Best Compact Gigabit Appliance	Processor: Intel Celeron J3060 dual-core, 1.6GHz up to 2.48GHz	Ethernet: 2 × Intel Gigabit Ethernet	Memory: 8GB DDR3L	VIEW ON AMAZON	See Our Full Breakdown
Protectli Vault FW4C Fanless Firewall Mini PC, Intel Celeron J3710, 4 Ethernet Ports, 8GB RAM, 120GB SSD		Best Four-Port 2.5GbE Pick	Processor: Intel Celeron J3710 quad-core, 1.6GHz up to 2.6GHz	Ethernet: 4 × Intel 2.5GbE	Memory: 8GB DDR3	VIEW ON AMAZON	See Our Full Breakdown
Protectli Vault FW2B 2-Port Fanless Firewall Mini PC, Intel Celeron J3060, Barebone		Best Barebones Build	Processor: Intel Celeron J3060 dual-core, 1.6GHz up to 2.48GHz	Ethernet: 2 × Intel Gigabit Ethernet	Memory: DDR3L-1600 support; up to 8GB, not included	VIEW ON AMAZON	See Our Full Breakdown

More Details on Our Top Picks

1. Protectli Vault FW2B Fanless Firewall Mini PC, Intel Dual-Core, 4GB RAM, 32GB SSD

   

   Best Compact Entry-Level Pick

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   The Protectli Vault FW2B is a straightforward choice for a small open-source firewall build: its fanless case stays silent, and its two Intel Gigabit ports provide a simple WAN-and-LAN layout. It is much smaller than the four-port Vault FW4B, making it easier to place beside a modem or tuck into a compact network cabinet. Compatibility with pfSense and OPNsense is useful, but the machine arrives without an operating system, so installation and setup are part of the job. Its 4GB of RAM and 32GB SSD also leave less room for heavier services or a growing package set than the FW4B’s larger memory and drive. I’d choose it for basic routing and firewall duties, not as a platform for extensive add-ons.

   Pros:

   • Fanless design runs silently in a home or small office
   • Two Intel Gigabit Ethernet ports suit a basic WAN-and-LAN setup
   • Compact dimensions fit tight network spaces
   • Supports AES-NI and is tested with pfSense and OPNsense

   Cons:

   • No operating system is preinstalled, so installation is the buyer’s responsibility
   • 4GB RAM and 32GB storage constrain heavier firewall workloads and add-ons

   Best for: Home users building a quiet, two-interface pfSense or OPNsense firewall for basic routing and network protection.

   Not ideal for: Users who need several physical network segments, substantial storage, or headroom for multiple add-on services; the 4GB RAM and 32GB SSD are limiting.

   • Processor:Intel Celeron J3060 dual-core, 1.6 GHz (up to 2.48 GHz)
   • Memory:4GB DDR3L RAM
   • Storage:32GB mSATA SSD
   • Ethernet:2 Intel Gigabit Ethernet ports
   • Cooling:Fanless
   • Operating system:None preinstalled; OS agnostic
   • Dimensions:4.25 x 4.56 x 1.69 inches
   Our verdict

   “Choose the FW2B for a compact, silent firewall with two Gigabit interfaces, but pick the FW4B if you need more ports and memory.”

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2. Protectli Vault V1210 Mini PC with Intel N5105, Dual 2.5GbE NICs, 4GB RAM, and 500GB NVMe SSD

   

   Best for a Compact 2.5GbE Upgrade

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   The Protectli Vault V1210 makes sense for buyers who want faster-than-Gigabit links without moving to a larger multiport appliance. Its two Intel I226-V 2.5GbE ports can support faster WAN or LAN connections than the Gigabit interfaces on the Vault FW4B, while passive cooling keeps the unit quiet. The quad-core N5105 and included 500GB NVMe SSD add a stronger processor and far more primary storage than the older FW2B. The tradeoff is that its 4GB onboard RAM cannot be upgraded, which limits room for memory-hungry packages or virtualized workloads. It also has only two network ports, so buyers planning separate physical interfaces for several zones should look instead at the six-port V1610. No OS is included.

   Pros:

   • Two Intel 2.5GbE ports enable faster network links than Gigabit-only appliances
   • Quad-core Intel N5105 processor
   • 500GB NVMe SSD provides substantial included storage
   • Passive cooling avoids fan noise

   Cons:

   • 4GB LPDDR4 memory is onboard and limited
   • Only two Ethernet ports, so additional physical network zones may need external switching
   • No operating system is preinstalled

   Best for: Home-lab and small-office users upgrading to 2.5GbE who need a quiet, two-port appliance for OPNsense or similar software.

   Not ideal for: Buyers who need multiple physical LAN segments or more than 4GB of memory for add-ons and heavier services.

   • Processor:Intel N5105 quad-core, 2.0 GHz (up to 2.9 GHz)
   • Network:2 x Intel I226-V 2.5GbE ports
   • Memory:4GB onboard LPDDR4
   • Storage:32GB onboard eMMC and 500GB NVMe SSD
   • USB:4 x USB 3.0 Type-A and 1 x USB Type-C console
   • Cooling:Passive
   • Power consumption:24 watts
   • Dimensions:4.5 x 4.5 x 2 inches
   Our verdict

   “Pick the V1210 if two 2.5GbE interfaces and quiet operation matter more than memory capacity or a larger port count.”

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3. Protectli Vault FW4B 4-Port Firewall Appliance with Intel Quad-Core Celeron, 8GB RAM, and 120GB SSD

   

   Best Overall for Gigabit Open-Source Firewalls

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   For a conventional open-source firewall build, the Protectli Vault FW4B has a practical balance: four Intel Gigabit ports make it easier to assign separate interfaces to WAN, LAN, and additional network segments, while 8GB RAM and a 120GB SSD give it more working room than the two-port FW2B. Its fanless design suits always-on installations where noise is unwelcome, and AES-NI support is relevant for compatible encryption workloads. Compared with the newer V1210, it lacks 2.5GbE, but its four physical ports may be more useful than faster links for buyers who need several wired zones. The older Celeron platform and Gigabit ceiling make it a less suitable fit for high-throughput connections. It ships without an OS, and coreboot requires user installation if desired.

   Pros:

   • Four Intel Gigabit Ethernet ports support multiple physical network segments
   • 8GB RAM and 120GB SSD offer more capacity than the two-port FW2B
   • Fanless convection cooling supports silent operation
   • AES-NI support and compatibility testing with pfSense and OPNsense

   Cons:

   • Gigabit Ethernet is a speed ceiling for multi-gigabit connections
   • No operating system is preinstalled
   • Coreboot BIOS must be installed by the user if wanted

   Best for: Home-lab and small-office users who want four separate Gigabit interfaces, silent operation, and enough memory for a moderate firewall setup.

   Not ideal for: Users with multi-gigabit internet or workloads that need newer processors and faster Ethernet; this model is limited to Gigabit ports.

   • Processor:Intel Celeron J3160 quad-core, up to 2.2 GHz
   • Memory:8GB DDR3L RAM
   • Storage:120GB mSATA SSD
   • Ethernet:4 Intel Gigabit Ethernet ports
   • Other ports:2 USB 3.0, 2 HDMI, and 1 RJ-45 COM
   • Cooling:Fanless convection cooling
   • Operating system:None preinstalled; OS agnostic
   • Dimensions:4.5 x 4.3 x 1.5 inches
   Our verdict

   “Choose the FW4B for a quiet four-port Gigabit firewall with more memory and storage than the FW2B, not for multi-gigabit throughput.”

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4. VNOPN Fanless Firewall Appliance, Intel J3710, 4 Intel I226 LAN Ports, 8GB RAM, 64GB mSATA SSD

   

   Best Low-Power Four-Port Option

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   The VNOPN fanless appliance is aimed at buyers who value restrained power use and four Ethernet connections more than abundant storage. Its stated 6.5W consumption and fanless cooling suit an always-on home gateway, while four Intel I226 ports provide a useful multi-interface layout. That makes it a different proposition from the Protectli FW4B: the VNOPN lists lower power use and I226 LAN ports, while the FW4B includes a larger 120GB SSD and AES-NI support in its product details. Both offer four ports and 8GB of memory, but the VNOPN’s 64GB drive is smaller and its RAM cannot exceed 8GB. It has been tested with pfSense, OPNsense, and Ubuntu, though no preinstalled OS is specified. Choose it for an efficient gateway, not a storage-heavy mini server.

   Pros:

   • Four Intel I226 LAN ports support multiple wired network segments
   • Listed 6.5W power consumption suits an always-on appliance
   • Fanless cooling supports quiet operation
   • Tested with pfSense, OPNsense, and Ubuntu

   Cons:

   • Memory is limited to 8GB with no stated upgrade capacity
   • 64GB mSATA SSD is smaller than the FW4B’s 120GB drive
   • HDD storage is not supported

   Best for: Home users and small offices seeking a quiet, low-power four-port appliance for pfSense, OPNsense, or Linux gateway duties.

   Not ideal for: Buyers who need expandable memory, larger included storage, or a documented AES-NI feature; memory is capped at 8GB and HDDs are unsupported.

   • Processor:Intel J3710, 4 cores/4 threads, up to 2.64 GHz
   • Memory:8GB DDR3 RAM; maximum 8GB
   • Storage:64GB mSATA SSD; supports up to 512GB; HDD not supported
   • LAN ports:4 x Intel I226
   • Power consumption:6.5W
   • Cooling:Fanless
   • Mounting:VESA
   • Dimensions:5.27 x 4.98 x 1.43 inches
   Our verdict

   “Choose the VNOPN for a low-power, four-port open-source gateway, but favor the FW4B if its larger SSD or AES-NI support better fits your needs.”

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5. Protectli Vault V1610 Mini PC with Intel N6005, 6× 2.5GbE Ports, 16GB RAM, and 500GB NVMe SSD

   

   Best for Multi-Gigabit, Multi-Segment Networks

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   The Protectli Vault V1610 is the most capable fit here for buyers building a multi-gigabit firewall with several wired zones. Six Intel I226-V 2.5GbE ports offer far more interface flexibility than the two-port V1210, and its 16GB of onboard RAM gives it more room for firewall packages and services than that model’s 4GB. The included 500GB NVMe SSD also outpaces the FW4B’s 120GB drive for logs or other stored data. That capacity comes with a fixed ceiling: memory is onboard and limited to 16GB, so it is not an upgrade-friendly platform. The system arrives without an OS, and its compact, fanless-style design does not change the need to install and configure firewall software yourself. I’d reserve it for networks that can use its extra ports and bandwidth.

   Pros:

   • Six Intel I226-V 2.5GbE ports support several fast network segments
   • 16GB onboard LPDDR4 exceeds the V1210’s 4GB
   • 500GB NVMe SSD provides ample included storage
   • Tested with OPNsense, VyOS, and other open-source software

   Cons:

   • 16GB memory is onboard and cannot be expanded
   • No operating system is preinstalled
   • Larger port and storage capacity may be unnecessary for simple two-interface networks

   Best for: Small offices and advanced home labs that need several 2.5GbE interfaces, higher memory capacity, and substantial local SSD storage.

   Not ideal for: Basic home gateways with only one WAN and one LAN, or buyers who want upgradeable memory and a preinstalled firewall operating system.

   • Processor:Intel Celeron N6005 quad-core, 2.0 GHz (up to 3.3 GHz)
   • Network ports:6 x Intel I226-V 2.5GbE
   • Memory:16GB onboard LPDDR4
   • Storage:32GB eMMC and 500GB NVMe SSD
   • USB:4 x USB 3.2 Type-A and 1 x USB Type-C console
   • Video output:HDMI, up to 1920 x 1080
   • Operating system:None preinstalled; OS agnostic
   • Dimensions:5.6 x 4.75 x 2.15 inches
   Our verdict

   “Choose the V1610 when you can use six 2.5GbE ports and 16GB of RAM; for a basic two-port firewall, the V1210 is a smaller-scale alternative.”

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6. Protectli Vault V1210 Mini PC with Intel N5105, Dual 2.5GbE Ports, 4GB RAM and 32GB eMMC

   

   Best Compact 2.5GbE Starter

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   The Protectli Vault V1210 is a small, quiet foundation for an open-source firewall when two network interfaces are enough. Its dual Intel 2.5GbE ports provide faster links than the Gigabit ports on the Protectli Vault FW2B, while passive cooling avoids adding fan noise near a desk or router shelf. The tradeoff is a sparse starting configuration: 4GB of onboard RAM and 32GB of eMMC leave less headroom for add-on services, and neither memory nor storage is readily upgraded. There is also no operating system installed, so the buyer must prepare and install OPNsense, VyOS, or another compatible system. Compared with the six-port SJRC, this is more compact and simpler, but it is a poor match for complex multi-network setups.

   Pros:

   • Two Intel I226-V 2.5GbE ports support faster WAN and LAN links than the FW2B’s Gigabit ports.
   • Passive heatsink operation keeps the appliance quiet.
   • Compact 4.5-inch-square chassis fits tight network spaces.
   • Compatible with OPNsense, VyOS, and other open-source firewall software.

   Cons:

   • No operating system is preinstalled, so setup requires a separate installation process.
   • Onboard 4GB RAM and 32GB eMMC limit capacity and upgrade flexibility.
   • No NVMe storage is included.

   Best for: Home users building a quiet OPNsense or VyOS gateway with two 2.5GbE connections and modest service needs.

   Not ideal for: Buyers who need several physical LAN segments, expandable memory, or included NVMe storage.

   • Processor:Intel N5105 quad-core, 2.0GHz up to 2.9GHz
   • Network:2 × Intel I226-V 2.5GbE
   • Memory:4GB onboard LPDDR4
   • Storage:32GB onboard eMMC; no NVMe storage included
   • Cooling:Passive heatsink
   • Operating system:None preinstalled
   • Dimensions:4.5 × 4.5 × 2 inches
   Our verdict

   “Choose the V1210 for a compact, silent two-port 2.5GbE firewall, but pick the SJRC if you need more interfaces or easier expansion.”

   → See it on Amazon →

7. SJRC Fanless Firewall Mini PC, Core i3-8130U, 8GB RAM, 128GB SSD, 6-Port 2.5GbE

   

   Best for Multi-Segment Networks

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   For a firewall that needs to divide a homelab or small office into several wired zones, the SJRC’s six 2.5GbE ports are its defining advantage. They provide more direct interface choices than the four-port Protectli Vault FW4C, reducing reliance on VLANs or an external switch for basic network separation. The included 8GB RAM and 128GB SSD also make it a more complete starting point than the barebones Protectli Vault FW2B. Its fanless aluminum chassis supports quiet operation, and M.2 slots allow optional WLAN or cellular hardware. Those additions are not included, though, and the 16GB memory ceiling limits room for heavier virtualization or growing services. The two-core i3 is a practical routing platform, not a high-headroom server; buyers should also confirm their chosen firewall distribution supports the network hardware.

   Pros:

   • Six 2.5GbE ports support several physically separated network segments.
   • Includes 8GB RAM and a 128GB SSD, unlike the barebones FW2B.
   • Fanless aluminum chassis runs without a continuously spinning fan.
   • M.2 expansion supports optional WLAN or cellular modules.

   Cons:

   • Memory is capped at 16GB, limiting expansion for heavier services.
   • Optional cellular and WLAN modules are not included.
   • The two-core processor offers less room for compute-heavy workloads than a dedicated higher-capacity server.

   Best for: Homelab owners and small offices that need six wired 2.5GbE interfaces for WAN, LAN, guest, IoT, and lab networks.

   Not ideal for: Buyers who want a low-effort two-port appliance, need more than 16GB RAM, or expect cellular and WLAN modules to be included.

   • Processor:Intel Core i3-8130U, 2 cores / 4 threads, up to 3.40GHz
   • Ethernet:6 × 2.5GbE Intel I226-V
   • Memory:8GB DDR3L SODIMM; supports up to 16GB
   • Storage:128GB SSD; M.2 M-Key and SATA 3.0 expansion
   • Expansion:M.2 B-Key for optional 4G/5G; M.2 E-Key for optional WLAN
   • Cooling:Fanless aluminum chassis
   • Dimensions:6.42 × 4.92 × 2.17 inches
   Our verdict

   “Pick the SJRC when six 2.5GbE ports matter more than a higher memory ceiling or a simpler two-port setup.”

   → See it on Amazon →

8. Protectli Vault FW2B Fanless Firewall Mini PC, Intel Dual-Core, 8GB RAM, 120GB mSATA SSD

   

   Best Compact Gigabit Appliance

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   The Protectli Vault FW2B suits a straightforward two-interface firewall where a quiet, preconfigured hardware base matters more than multi-gigabit networking. It arrives with 8GB RAM and a 120GB mSATA SSD, so unlike the barebones FW2B version in this roundup, it does not require the buyer to source memory and storage first. Its Intel Gigabit Ethernet ports are the key limitation: the Protectli Vault V1210 offers two 2.5GbE ports, and the FW4C adds four 2.5GbE ports for faster links or more physical segments. The J3060 is a modest dual-core processor, but AES-NI support is useful for compatible encrypted firewall workloads. There is no OS preinstalled, and Coreboot is optional rather than ready to use, so installation and firmware choices remain part of setup.

   Pros:

   • Includes 8GB RAM and a 120GB mSATA SSD.
   • Fanless passive cooling supports silent operation.
   • AES-NI hardware support can assist compatible encrypted workloads.
   • Tested with pfSense, OPNsense, and other open-source firewall software.

   Cons:

   • Two Gigabit ports are slower than the 2.5GbE ports on the V1210 and FW4C.
   • No operating system is preinstalled.
   • Coreboot BIOS is optional and requires user installation.

   Best for: Home users who want a compact, silent two-port Gigabit firewall with RAM and SSD already installed.

   Not ideal for: Buyers with multi-gigabit internet, multiple physical network zones, or a preference for a preinstalled firewall operating system.

   • Processor:Intel Celeron J3060 dual-core, 1.6GHz up to 2.48GHz
   • Ethernet:2 × Intel Gigabit Ethernet
   • Memory:8GB DDR3L
   • Storage:120GB mSATA SSD
   • Security:AES-NI hardware support
   • Cooling:Passive heatsink
   • Operating system:None preinstalled; OS agnostic
   Our verdict

   “Choose this FW2B for a ready-to-equip, silent Gigabit gateway, but favor the V1210 or FW4C if you need faster links.”

   → See it on Amazon →

9. Protectli Vault FW4C Fanless Firewall Mini PC, Intel Celeron J3710, 4 Ethernet Ports, 8GB RAM, 120GB SSD

   

   Best Four-Port 2.5GbE Pick

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   The Protectli Vault FW4C balances interface count and compact size: its four 2.5GbE ports let a buyer assign separate physical connections to WAN, LAN, guest, and another network without stepping up to the SJRC’s six-port chassis. Compared with the two-port V1210, it offers more room for segmentation, while its included 8GB RAM and 120GB SSD make it a more complete starting point. The tradeoff is an older quad-core Celeron J3710, which makes this better suited to routing and firewall duties than compute-heavy add-ons. It is fanless and supports AES-NI, but the operating system is not included. Buyers should also distinguish this model from other similarly named Protectli Vault versions: this listing specifies four 2.5GbE ports, not Gigabit connections.

   Pros:

   • Four 2.5GbE ports support multiple physical network segments.
   • Includes 8GB RAM and a 120GB SSD.
   • Passive cooling keeps operation silent.
   • AES-NI support and compatibility with pfSense, OPNsense, and other open-source software.

   Cons:

   • The Celeron J3710 is an older processor with limited headroom for heavier workloads.
   • No operating system is preinstalled.
   • Four ports offer less segmentation flexibility than the SJRC’s six-port layout.

   Best for: Home-lab and small-office users who need four 2.5GbE firewall interfaces in a compact, silent appliance.

   Not ideal for: Buyers running demanding add-on services or seeking a newer processor and more performance headroom.

   • Processor:Intel Celeron J3710 quad-core, 1.6GHz up to 2.6GHz
   • Ethernet:4 × Intel 2.5GbE
   • Memory:8GB DDR3
   • Storage:120GB SSD
   • Security:Intel AES-NI hardware support
   • Cooling:Passive, fanless
   • Power consumption:20 watts
   Our verdict

   “Choose the FW4C for four quiet 2.5GbE interfaces and included storage, but look to the SJRC if you need six ports.”

   → See it on Amazon →

10. Protectli Vault FW2B 2-Port Fanless Firewall Mini PC, Intel Celeron J3060, Barebone

    

    Best Barebones Build

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    This barebones Protectli Vault FW2B is for buyers who want to choose their own memory and mSATA storage rather than receive a configured appliance. Its fanless aluminum heatsink and two Intel Gigabit ports suit a simple, quiet firewall, while compatibility with pfSense, OPNsense, and similar software leaves the OS choice open. The tradeoff is that setup starts with sourcing and installing RAM, storage, and an operating system; this is not the ready-to-configure option represented by the other FW2B in this roundup, which includes 8GB RAM and a 120GB SSD. It also trails the V1210 on port speed and the FW4C on interface count. Secure Boot is listed, and Coreboot is optional, but memory compatibility warrants checking before buying components.

    Pros:

    • Barebones configuration lets buyers select their own RAM and mSATA storage.
    • Two Intel Gigabit Ethernet ports suit basic WAN-to-LAN routing.
    • Fanless aluminum heatsink avoids fan noise.
    • Includes a power supply, serial console cable, and VESA mount kit.

    Cons:

    • RAM, storage, and operating system are all excluded.
    • Two Gigabit ports are slower than the V1210’s 2.5GbE interfaces.
    • Supports up to 8GB RAM, and memory compatibility should be checked before purchase.

    Best for: DIY network builders who already have compatible DDR3L and mSATA parts or want to select those components themselves.

    Not ideal for: Buyers who want a firewall ready for installation out of the box, need 2.5GbE, or prefer not to verify component compatibility.

    • Processor:Intel Celeron J3060 dual-core, 1.6GHz up to 2.48GHz
    • Ethernet:2 × Intel Gigabit Ethernet
    • Memory:DDR3L-1600 support; up to 8GB, not included
    • Storage:mSATA storage not included
    • Cooling:Fanless aluminum heatsink
    • Power consumption:16 watts
    • Included accessories:12V power supply, quick-start guide, serial console cable, and VESA mount kit
    Our verdict

    “Pick this barebones FW2B only if you want to source compatible RAM and storage yourself; otherwise, the RAM-and-SSD-equipped FW2B is a simpler start.”

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How We Picked

I ranked these appliances by how well their listed hardware fits common open-source firewall jobs, including basic routing, multi-port segmentation, and faster home-lab networks. I compared processor generation, RAM, Ethernet count and speed, and storage type and capacity, then considered whether the configuration leaves practical room for updates and additional services. I treated fanless operation and compact appliance-style construction as useful traits, not proof of cooling performance or reliability.

The V1610 ranks first for its combination of six 2.5GbE ports, 16GB RAM, and a large NVMe drive. The V1210 with NVMe follows as a more focused dual-port choice, while the SJRC stands out for buyers who want six 2.5GbE connections and an Intel Core i3. Models with fewer ports, older processors, less storage, or barebone configurations rank lower because they suit narrower needs or require more planning. The listed hardware does not confirm support for a particular firewall operating system, so I’d verify compatibility, drivers, and installation requirements before buying.

Factors to Consider When Choosing Opensource Firewall Appliances

Choosing an appliance starts with your network plan, not the biggest specification list. I’d use these points to decide how much hardware you need, what you can reuse, and where a modest configuration could become a constraint.

Map the interfaces to your network layout

Count the physical connections you need before choosing an appliance. A two-port model can handle a simple WAN-to-LAN layout, especially when a managed switch will carry internal VLANs. Four ports may let you separate devices or networks without adding another switch, while six ports provide more direct connections for a lab or segmented household. More ports can add flexibility, but they do not automatically improve throughput or replace proper switching. Check that the firewall software supports the network interfaces and that its configuration tools can handle the VLAN setup you have in mind.

Match the processor and memory to your firewall workload

Basic routing and rule filtering usually place different demands on a system than encrypted VPN traffic, intrusion detection, or several network services running together. Those extra jobs can call for more processor capacity and RAM, so plan around the features you will actually enable. A higher-spec appliance may be worthwhile if it will run multiple services or handle demanding encrypted connections. For a simple network, extra headroom may sit unused while adding to your setup’s cost and power draw. Check the software’s hardware guidance and leave room for future features rather than assuming every firewall workload behaves alike.

Treat storage as room for software, logs, and recovery

Storage capacity affects more than the initial installation: packages, system updates, configuration backups, and retained logs all use space. A small eMMC drive may work for a lean firewall, but can leave less flexibility than a larger SSD or NVMe drive as your setup grows. Storage type and capacity are separate questions; a large drive is useful only if it is supported and you have a reason to keep data locally. Decide how you will back up configurations and whether logs belong on the appliance or another system. Avoid paying for capacity you will not use, but do not choose a minimal drive without checking the operating system’s requirements and your logging plan.

Verify operating-system and network-driver compatibility

These listings describe appliance hardware, not a guaranteed preinstalled open-source firewall. Before ordering, confirm that your chosen system supports the processor platform and the exact network controller, then check its installation method and current hardware guidance. Interface drivers matter because a device can have the right number of ports on paper yet still be a poor fit for your intended software. Look for clear details about BIOS settings, boot options, and how the system will be installed or recovered. If the listing leaves the network chipset unclear, ask the seller or choose a configuration with verifiable specifications instead of relying on a model name.

Choose between a ready configuration and barebone hardware

A configured appliance with memory and storage can reduce the parts you need to source and assemble. A barebone unit can make sense if you already have compatible components or want direct control over the build, but it shifts compatibility and setup work to you. Check exactly what is included: family names can cover versions with different processors, memory, and storage, as the multiple FW2B configurations in this lineup show. Confirm whether RAM or storage can be changed later and whether doing so affects support. For a first firewall build, a clearly specified, populated configuration is usually easier to plan around than an incomplete parts list.

Account for cooling, placement, and maintenance

Fanless construction can reduce moving parts and noise, making these appliances easier to place near a router or in a quiet workspace. It does not remove the need for airflow: a compact case tucked into a closed cabinet may run hotter than one with open space around it. Consider the appliance’s location, ambient temperature, and access for network cables before choosing a port layout. Also plan for firmware updates, configuration backups, and a recovery route if an update or hardware fault interrupts service. A small, silent box is useful only if it remains accessible enough to maintain.

Frequently Asked Questions

Can I install an open-source firewall system on any appliance in this list?

Not automatically. These are hardware appliances, and the listings do not specify a preinstalled firewall system or certify compatibility with a particular one. Check the operating system’s current hardware guidance, processor support, network-controller drivers, and installation method for the exact configuration. This is especially useful when several versions share a product family name but have different components. If you cannot confirm the network chipset, resolve that detail before choosing the unit.

Is a two-port appliance enough if I want to use VLANs?

Often, yes: a two-port appliance can connect to the internet and a managed switch that carries multiple VLANs over a trunk link. That setup depends on the firewall software, switch, and access points all supporting the VLAN arrangement you plan to use. Extra appliance ports can provide direct physical connections or simplify separate network links, but they are not required for every segmented network. Draw the connections first, including any guest, lab, or IoT networks. Then choose port count based on the layout rather than assuming each network needs its own firewall port.

Should I choose the V1210 with NVMe or the version with eMMC?

The V1210 versions share the N5105 platform and dual 2.5GbE ports, but their listed storage differs: one has a 500GB NVMe drive and the other 32GB eMMC. The eMMC configuration may suit a lean firewall installation with modest local logging and few added services. The NVMe version leaves much more room for packages and local data, although that extra capacity may not help a simple setup. Check the storage needs of your chosen software and how you plan to retain logs before deciding. Also verify that the listing matches the configuration you intend to buy.

Do I need six 2.5GbE ports for a home network?

Many homes do not: a two-port appliance connected to a capable switch can serve a straightforward firewall role. Six ports are more useful when you want several direct wired segments, are building a lab, or want to reduce reliance on a separate switch for some links. They can add flexibility, but they do not make each connection faster by themselves. Check your internet speed, internal traffic, switch capacity, and planned segmentation first. For choosing between six-port models, compare the processor and memory as well as the interface count.

Is a barebone firewall appliance a good choice for a first build?

It can be, if you are comfortable checking component compatibility, installing hardware, and troubleshooting the software setup. A barebone model may offer control over the memory and storage choices, but the listed configuration does not provide the same ready-to-install starting point as a populated model. Before buying, confirm which components are included, what must be added, and whether the firewall system supports your chosen parts. A beginner may find a clearly specified appliance with RAM and storage simpler to plan and recover. Whichever route you choose, prepare a backup of your configuration and a way to reinstall the system.

Conclusion

For the broadest mix of ports and capacity, I recommend the Protectli Vault V1610 as best overall; it is the strongest fit here for a growing network or home lab. The Protectli Vault V1210 with 500GB NVMe is my best value-style choice for a two-port setup that benefits from generous storage, while the SJRC six-port Core i3 is the pick for buyers who prioritize multiple 2.5GbE connections alongside a Core processor. For beginners, I’d favor a clearly specified, populated appliance such as the Protectli Vault FW4B over the barebone FW2B, after checking software and interface compatibility. For a compact, basic two-port firewall, the FW2B may fit, but compare its RAM and storage configuration closely; buyers running added services should lean toward the V1610 instead.