Protectli Vault FW4B Review 2026: The Best Firewall Appliance?
If you’re searching for a high-performance firewall appliance for your home or small business, the Protectli Vault FW4B is one of the best options available. With its Intel Quad-Core Celeron J3160 processor, AES-NI support, and four Intel Gigabit Ethernet ports, this compact device is built for speed, security, and reliability.
But is it the right choice for pfSense, OPNsense, or Untangle? Let’s explore its features, performance, and real-world applications to help you decide.
Protectli Vault FW4B: Overview and Specifications
The Protectli Vault FW4B is a barebone firewall micro appliance designed for pfSense, OPNsense, and other firewall distributions. Here’s what you get:
- Processor: Intel Celeron J3160 (Quad-Core, 1.6 GHz base, 2.24 GHz burst).
- AES-NI Support: Yes (hardware-accelerated encryption for VPNs).
- Ports: Four Intel Gigabit Ethernet ports (i211-AT).
- RAM Support: Up to 8GB DDR3L (not included).
- Storage: One mSATA slot and one 2.5-inch SATA bay (storage not included).
- Power Consumption: Approximately 10W (energy-efficient).
- Compatibility: Works with pfSense, OPNsense, Untangle, Linux, and Windows.
- Design: Compact, fanless, and silent.
Why Choose the Protectli Vault FW4B?
1. Optimized for Firewall and VPN Performance
The Intel Celeron J3160 is a low-power but capable processor that handles firewall rules and VPN encryption efficiently. With AES-NI support, it ensures fast VPN speeds for OpenVPN, WireGuard, and IPsec.
This makes the FW4B ideal for:
- Home labs.
- Small business networks.
- Remote workers needing a secure VPN gateway.
2. Four Intel Gigabit Ethernet Ports
Unlike many budget alternatives, the FW4B includes four Intel Gigabit Ethernet ports, which are more reliable than Realtek NICs. These ports are fully compatible with pfSense, OPNsense, and Untangle, making it perfect for multi-WAN setups or load balancing.
3. AES-NI Support for Faster Encryption
If you’re running a VPN server, AES-NI hardware acceleration is a must-have. It ensures faster encryption and decryption, reducing CPU load and improving performance.
Without AES-NI, VPN speeds can drop significantly—sometimes by 50% or more.
4. Compact, Fanless, and Energy-Efficient
The FW4B is silent and energy-efficient, consuming only about 10W of power. Its compact design makes it easy to place in a home office or server rack.
5. Barebone Design for Customization
The FW4B is sold as a barebone unit, meaning you’ll need to add:
- RAM (4GB to 8GB DDR3L recommended).
- Storage (mSATA or 2.5-inch SATA SSD).
- Optional Wi-Fi (via USB adapter if needed).
This allows you to customize the system based on your budget and requirements.
Setting Up the Protectli Vault FW4B
Step 1: Add RAM and Storage
- Recommended RAM: 4GB to 8GB DDR3L (8GB for heavy VPN use).
- Recommended Storage: 120GB to 250GB SSD.
Example components:
- RAM: Crucial 8GB DDR3L
- SSD: Samsung 870 EVO 250GB
Step 2: Install Your Firewall OS
The FW4B works seamlessly with:
We recommend OPNsense for its modern interface and free features.
Step 3: Configure Network and Security Rules
- Set up WAN and LAN ports in your firewall OS.
- Enable AES-NI acceleration for VPNs.
- Configure firewall rules, VPN, and intrusion detection as needed.
Protectli Vault FW4B: Pricing and Availability
The Protectli Vault FW4B (barebone) is available on:
- Amazon (Price: ~$350–$400)
With RAM and storage, the total cost is approximately $420–$480, which is still more affordable than many prebuilt firewall appliances.
Protectli FW4B vs. Alternatives
When comparing the Protectli FW4B to other firewall appliances, here’s how it stacks up:
- Qotom Q355G4: Cheaper but uses a slightly newer CPU (Celeron J3455).
- Netgate 2100: More expensive and has soldered RAM (less upgradeable).
The FW4B stands out for its Intel NICs, AES-NI support, and overall build quality.
Pros and Cons of the Protectli Vault FW4B
Pros:
- Four Intel Gigabit Ethernet ports (no Realtek issues).
- AES-NI support for faster VPN performance.
- Fanless, silent, and energy-efficient.
- Great compatibility with pfSense, OPNsense, and Untangle.
- Compact and durable metal case.
Cons:
- Sold as a barebone unit (requires separate RAM and storage).
- No built-in Wi-Fi (but you can add a USB adapter).
- Not as powerful as i5 or i7 models (but sufficient for most small networks).
Who Should Buy the Protectli Vault FW4B?
The Protectli Vault FW4B is perfect for:
- Home lab enthusiasts using pfSense or OPNsense.
- Small businesses needing a reliable firewall or VPN gateway.
- Remote workers who want a secure, always-on VPN.
- Anyone looking to replace their ISP router for full network control.
It’s not ideal for:
- Large enterprises (requires more processing power).
- Users who want a preinstalled firewall OS (it’s barebone only).
Final Verdict: Is the Protectli FW4B Worth It?
Yes! The Protectli Vault FW4B is one of the best firewall appliances for home and small business use, thanks to its:
- Intel NICs and AES-NI support (no performance bottlenecks).
- Compact, silent, and energy-efficient design.
- Full compatibility with pfSense, OPNsense, and Untangle.
If you’re looking for a reliable, high-performance firewall appliance, the FW4B is an excellent choice, especially if you’re running pfSense or OPNsense.
