10 Best Firewalls for PC for 2026

Dedicated firewall appliances have quietly become the smart pick for home labs and small offices. Running pfSense or OPNsense on a fanless mini PC gives you cleaner traffic inspection, smarter VPN routing, and far more control than a stock router. The picks below balance throughput, port count, and upgrade room, with honest trade-offs called out for each.

More Details On Our Top Picks

Glovary’s J6413 barebone lands at the top of the list because it gives homelab enthusiasts something most pre-built firewalls don’t: total control over RAM and storage. The Celeron J6413 processor runs four cores up to 3.0 GHz with a frugal TDP that suits 24/7 operation, and the chassis stays silent thanks to a fanless aluminum shell. Owners commonly tuck this behind a monitor or into a rack shelf where it quietly handles routing duties.

The dual DDR4 slots and dual M.2 NVMe bays let you size memory and storage to your workload without paying for parts you won’t use. With four Intel i226V 2.5GbE ports (a NIC, or network interface controller, that handles up to 2.5 gigabits per second), plus AES-NI (hardware-accelerated encryption that speeds up VPN tunnels) for encrypted traffic, the box punches above its weight for OPNsense or pfSense deployments.

A Strong Showing

• ✓Barebone design lets you choose exact RAM and SSD capacity
• ✓Four i226V 2.5GbE ports handle multi-WAN or VLAN segmentation
• ✓Fanless chassis runs silent in living spaces and bedrooms
• ✓DDR4 plus dual NVMe slots leave headroom for future upgrades
• ✓AES-NI acceleration keeps WireGuard and IPsec throughput healthy

Things To Consider

• •No RAM or SSD included, so first-time setup means extra purchases
• •BIOS tuning may be needed for Auto Power-On behavior
• •Limited documentation for niche firewall distros out of the box

Made For

Tinkerers and homelab builders who want to spec their own memory and storage rather than accept a fixed configuration.

Consider Something Else When

The Glovary Firewall Mini PC J3710 suits you better when you prefer a turnkey unit with RAM and SSD already populated.

This second Glovary unit skips the barebone approach and ships with 8GB of RAM and a 128GB SSD already fitted. The Pentium J3710 quad-core chip runs up to 2.64 GHz on a 6.5W TDP, so power draw stays low even under continuous traffic shaping. For most home offices, that combination is plenty of headroom for OPNsense with Suricata (an intrusion-detection engine that watches packets for malicious signatures) running in the background.

Four i225V 2.5GbE ports cover a typical WAN plus LAN setup, and HDMI plus DisplayPort mean you can drive dual monitors when configuring the box. The fanless enclosure also helps in dusty environments where spinning fans tend to clog.

Key Advantages

• ✓Pre-installed RAM and SSD remove the first-day assembly step
• ✓Quad-core J3710 handles Suricata inspection comfortably
• ✓Fanless design means no fan failure points to worry about later
• ✓Dual display outputs help during initial configuration

Worth Noting

• •DDR3L memory caps long-term upgrade flexibility
• •128GB drive fills up quickly with verbose packet logs
• •Less future-proof than the DDR5-equipped N150 sibling further down this list

Feature Snapshot

Feature	Specification	Why It Matters
CPU	Intel Pentium J3710, 4C/4T, up to 2.64 GHz	Plenty of threads for packet filtering and VPN
Network Ports	4 x Intel i225V 2.5GbE	Faster than standard gigabit for NAS traffic
Memory	8GB pre-installed	Ready for IDS/IPS workloads
Storage	128GB SSD included	Enough for OS plus weeks of logs

Right Fit For

Home users stepping into dedicated firewalls for the first time who would rather not source compatible components separately.

A Better Fit Elsewhere

The Glovary N150 Mini PC Firewall makes more sense if you want DDR5 memory plus six network ports in the same form factor.

The 12th-gen Intel N150 chip lifts this Glovary box above the older J3710 siblings on raw single-thread speed, hitting 3.6 GHz under burst. Six 2.5GbE i226V ports are the headline, though, and they let you segment traffic into separate VLANs (virtual LANs that isolate groups of devices on one physical network), feed a 10G uplink via link aggregation (bonding multiple NICs together for higher throughput), or run dedicated DMZ and guest interfaces without buying a managed switch.

DDR5 memory and a 128GB NVMe SSD bring a noticeable step up in responsiveness, especially when running multiple services like pfBlockerNG and WireGuard simultaneously. The fanless chassis stays cool enough for closet mounting.

A Few Strong Suits

• ✓Six 2.5GbE ports support complex multi-segment topologies
• ✓DDR5 RAM handles memory-hungry packages without swapping
• ✓NVMe boot drive trims OS load times and package installs
• ✓N150 burst speed improves VPN handshake performance

Trade Offs

• •Higher port count means a more involved initial configuration
• •Fanless cooling can throttle under sustained gigabit-plus loads
• •Costs more than the four-port alternatives from the same brand

Best Suited To

Network enthusiasts running segmented networks with multiple SSIDs, guest networks, or dedicated IoT VLANs.

Not Your Match When

The VNOPN Fanless Micro Firewall Appliance Intel J3710 Quad Core suits you better if you only need four LAN ports and want a smaller price tag.

Protectli built its name in the firewall appliance space, and the FW4C shows why. The Intel J3710 quad-core CPU paired with AES-NI gives consistent VPN throughput, while four 2.5G Intel NICs handle modern multi-gig home connections. Owners commonly cite the US-based support team and the brand’s solid compatibility testing as reasons to pay a little extra.

The compact metal case includes VESA mounting points and a Kensington lock slot, which matters if the box lives in a shared workspace. No OS is pre-installed, so you bring your own OPNsense, pfSense, or Linux distribution of choice.

Positive Points

• ✓Protectli’s reputation means better-tested firmware compatibility
• ✓AES-NI support lifts encrypted tunnel performance
• ✓VESA mountable for discreet behind-monitor placement
• ✓Solid metal chassis aids passive cooling and durability

Minor Gripes

• •J3710 CPU trails the newer N150 in single-thread benchmarks
• •No operating system included out of the box
• •Costs noticeably more than no-name equivalents with similar specs

Quick Facts

Feature	Specification	Why It Matters
CPU	Intel J3710, 4C/4T, 1.6 GHz base, 2.6 GHz burst	Proven chip with broad OS support
Network Ports	4 x Intel 2.5GbE	Multi-gig ready for modern ISPs
Memory	8GB DDR3	Sufficient for most firewall packages
Storage	120GB SSD	Comfortable room for logs and packages

Who It Suits Best

First-time firewall appliance owners who value brand reputation, documented compatibility, and accessible support over raw specs.

Look Elsewhere When

The Sharevdi Firewall Intel N150 Mini PC Router suits you better if dual SFP+ fiber ports are a must for your network.

VNOPN’s J3710 box keeps things straightforward: four Intel i226 LAN ports, an HDMI output, and a fanless chassis that slips onto the back of any VESA-compatible monitor. The 6W TDP keeps electricity costs negligible even when running around the clock. AES-NI support means VPN performance stays usable for site-to-site tunnels.

Unlike the Glovary units, this one ships without RAM or storage, so you pick your own DDR3L SO-DIMM plus mSATA SSD to match the workload. BIOS access through the DEL key simplifies firmware tuning for auto-boot or Wake-on-LAN.

What It Does Well

• ✓Compact footprint fits behind monitors via VESA mount
• ✓Four i226 ports deliver reliable 2.5GbE throughput
• ✓6W TDP makes around-the-clock operation cheap
• ✓Fanless design eliminates a common failure point

Room For Improvement

• •No RAM or SSD included at purchase
• •Older DDR3L memory limits future expansion
• •mSATA storage tops out at lower capacities than NVMe alternatives

Perfect Match For

Tidy workspace owners who want a hidden firewall bolted to the back of their display with no extra cabling on the desk.

Swap It Out When

The Glovary Fanless Mini PC Firewall Hardware J6413 fits better when dual M.2 NVMe slots and DDR4 memory matter more to your plans.

The Protectli FW2B trims down to two Intel gigabit NICs for setups that only need one WAN and one LAN. The Celeron dual-core runs up to 2.48 GHz in turbo, which is plenty for a basic pfSense install without IDS. AES-NI keeps VPN traffic moving at decent speeds for remote workers.

You also get four USB 2.0 ports, two USB 3.0 ports, a COM port, and dual HDMI, which gives plenty of options for connecting peripherals or extra displays during setup. The 8GB DDR3L RAM and 120GB mSATA SSD come pre-installed, so this works as a true turnkey appliance.

Advantages To Know

• ✓Compact size suits cramped networking shelves
• ✓Pre-installed RAM and storage simplify first-day setup
• ✓Plenty of USB ports for keyboard, recovery media, or LTE dongles
• ✓Protectli’s tested firmware images reduce install headaches

Points To Note

• •Only two NICs restrict multi-segment network designs
• •Gigabit ports cap out below modern multi-gig switches
• •Older dual-core CPU shows its age under IDS workloads

Who Will Love This

Single-WAN home lab users who want a trusted brand with a simple two-port topology and zero assembly required.

Another Choice May Suit

The Protectli Vault FW4C is the upgrade path within the same lineup if you find yourself wanting two more ports later on.

VNOPN’s larger-storage variant doubles the SSD to 240GB, which makes a real difference for anyone running verbose packet capture or Suricata logging. The Intel J3710 quad-core still tops out at 2.64 GHz, but for typical home firewalls that’s not the bottleneck. Four 2.5GbE Intel i226 NICs keep multi-WAN or link aggregation viable.

The case adds an RS232 COM port alongside the usual HDMI and USB 3.0 ports, which helps if you want console access during recovery. VESA mounting points round out a flexible install story for tiny home offices.

Useful Touches

• ✓240GB SSD handles extended log retention without external storage
• ✓RS232 COM port gives a true serial console for troubleshooting
• ✓VESA mount keeps the box off the desk entirely
• ✓Fanless chassis drops dust and noise to zero

Small Caveats

• •mSATA interface limits drive speed versus NVMe options
• •DDR3L memory tops out at modest capacities
• •Single HDMI port means no dual-display setup during configuration

Built With In Mind

Log-hungry network monitors and security hobbyists who want ample on-board storage without attaching an external drive.

Reach For A Different Pick When

The Glovary N150 Mini PC Firewall fits better if you want NVMe storage and DDR5 memory rather than mSATA plus DDR3.

FANPEEC’s i5-8350U brings real workstation muscle to the firewall role, with four cores and eight threads running up to 3.6 GHz. That’s overkill for plain routing, but it pays off when you’re running multiple VPN tunnels, virtual machines, or containerized services alongside pfSense or OPNsense. 32GB of DDR4 RAM plus a 512GB SSD give you breathing room that the smaller appliances can’t match.

The industrial-grade fanless chassis targets harsher environments like factory floors or outdoor enclosures, with wider operating temperature tolerances than consumer mini PCs.

Features That Help

• ✓Eight-thread CPU crushes multi-VPN workloads
• ✓32GB DDR4 supports VM and container side-loads
• ✓Industrial thermal design tolerates dust and heat
• ✓512GB SSD holds months of detailed logs

Areas To Watch

• •Higher power draw than Atom or Celeron-based firewalls
• •Costs more than most entries in this list
• •Limited network port count means adding a NIC for multi-WAN

Whose Shelf It Belongs On

Power users running VPNs, virtual machines, or content filtering on top of firewall duties who want extra CPU and RAM headroom.

Where A Sibling Pick Shines

The BOSGAME E5 Mini PC offers similar multitasking capability at a lower price point if you don’t need industrial-grade thermals.

The Ryzen 3 5300U inside the BOSGAME E5 is a Zen 3 chip with four cores and eight threads, hitting 3.8 GHz under boost. That’s well-suited to firewall plus light server duties, especially since the integrated graphics can drive dual 4K displays during setup. 16GB of DDR4 and a 512GB NVMe SSD round out a generous spec sheet for the price.

It’s not branded as a firewall appliance, but it runs OPNsense and pfSense without drama and gives extra horsepower for users who want to run Pi-hole, Unbound, or Home Assistant alongside their routing.

What Stands Out

• ✓Zen 3 architecture delivers strong single and multi-thread performance
• ✓512GB NVMe gives comfortable room for logs and packages
• ✓Multi-purpose design handles routing and home server duties
• ✓Lower price than equivalent Intel i5-based options

Practical Considerations

• •Not optimized specifically as a firewall appliance
• •Smaller community guides for niche firewall distros
• •Fan cooling adds a moving part that can fail over years of use

Core Details

Feature	Specification	Why It Matters
CPU	AMD Ryzen 3 5300U, 4C/8T, up to 3.8 GHz	Plenty of power for multi-service setups
Memory	16GB DDR4	Comfortable for VM and container hosting
Storage	512GB NVMe SSD	Fast boot plus ample log capacity

Right Fit For

Mixed-use households where the same box handles firewall duties plus home server tasks like media streaming or DNS filtering.

Skip It When

The Protectli Vault FW4C fits your needs better if you prefer a fanless, purpose-built appliance with documented firewall support.

The Sharevdi N150 firewall closes out the list with a feature most competitors skip: dual SFP+ ports (small form-factor pluggable fiber cages that handle 10-gigabit connections) for 10G fiber uplinks. Four Intel i226-V 2.5GbE ports handle local distribution, while the N150 CPU hits 3.6 GHz burst for solid VPN and IDS throughput.

An 8GB DDR4 module and 128GB M.2 NVMe SSD come pre-installed, so you can write the firewall image and get going. The fanless shell also has an HDMI output and a COM port for serial console recovery when networking is down.

What Helps Most

• ✓Dual SFP+ opens the door to 10G fiber ISP connections
• ✓Pre-installed DDR4 and NVMe streamline initial setup
• ✓COM port offers a reliable recovery channel
• ✓N150 CPU handles IPSec and WireGuard at gigabit-plus speeds

Honest Caveats

• •SFP+ modules usually sold separately
• •Premium positioning raises the cost over four-port alternatives
• •8GB RAM caps memory-heavy IDS deployments

Made For

Home labs and small offices with fiber ISP service or 10G NAS uplinks who want native SFP+ rather than media converters.

Consider Something Else When

The Glovary N150 Mini PC Firewall fits better when six 2.5GbE copper ports matter more to your topology than dual SFP+.

Picking The Right Firewall Appliance For Your Setup

Choosing a firewall mini PC comes down to three core decisions: port count, CPU generation, and whether you need storage pre-installed.

Port count matters most for network segmentation. Two-port models like the Protectli FW2B handle a simple WAN/LAN split, while four-port units cover DMZ or guest network setups. The six-port N150 models serve VLAN-heavy topologies or 10G uplink aggregation, and dual SFP+ boxes like the Sharevdi fit fiber-fed environments.

CPU choice shapes throughput and feature depth. Older Celeron and Pentium chips handle basic filtering comfortably, but IPSec, WireGuard, and IDS packages push them harder. The 12th-gen Intel N150 adds modern AES-NI, DDR5 support, and burst speeds around 3.6 GHz, which translates to snappier VPN handshakes. Ryzen and Core i5 options enter workstation territory, useful when the same box doubles as a home server.

Storage and memory decide how long you can keep logs and how many services run side by side. Barebone units save money if you have spare DDR4 or mSATA modules. Turnkey builds with 128GB or larger SSDs suit users who want to write the firewall image and start configuring without sourcing parts. Fans versus fanless designs also matter for dust-prone locations, where fanless aluminum chassis quietly outlast their spinning counterparts.

Key Considerations Across These Picks

Common Shopping Slip Ups

The biggest mistake is buying a firewall appliance without checking NIC compatibility. pfSense and OPNsense lean heavily on Intel network controllers, so boxes advertising Realtek or Broadcom chips often need extra driver wrangling. Sticking to Intel i225 or i226 NICs removes that headache.

Another trap is underestimating storage needs. Verbose IDS logging and packet captures consume gigabytes fast, so a 64GB SSD fills up within weeks under default settings. A 128GB or larger drive, plus scheduled log rotation, keeps things tidy without external storage.

Why Top Tier Costs More

Premium firewall appliances earn their higher cost through better-tested firmware compatibility, dedicated support teams, and chassis built for continuous operation. Protectli’s models, for example, publish verified OPNsense and pfSense images that save hours of driver hunting.

Higher-tier boxes typically add AES-NI hardware acceleration, multi-gig NICs, and DDR5 memory, all of which keep VPN and IDS throughput strong as your network grows. For most home users a mid-range four-port unit handles the workload, but households with gigabit-plus fiber or multiple VPN tunnels benefit from the extra headroom.

Frequently Asked Questions