Zynshield 1U Rackmount Firewall OPNsense PfSense OpenWRT J1900 6 Intel 1G LAN

Products Highlight

1. High-Efficiency Processing

• Intel® Quad-Core/Quad-Thread "Classic Elite" low-power CPU

• Fanless design with pure aluminum heatsink for 10+ year lifespan

2. Enterprise Networking

• 6× Intel i211-AT Gigabit Ethernet ports

• Supports LAN1-2 port Bypass (customizable)

3. Memory Configuration

• Single SO-DIMM DDR3 slot

• Max 8GB capacity

4. Advanced Thermal System

• Dual 4020 dual-ball bearing fans

• Built-in dust filter at air intake

• Optimized airflow channel design

Products Datasheet

CPU Comparison

Recommend Operating System

1. OpenWRT x86_64

Key Advantages:
✅ Ultra-lightweight: RAM usage <200MB, ideal for low-power CPUs like J1900.
✅ Extensive plugin ecosystem: Supports WireGuard VPN, SQM QoS, and AdGuard Home.

Ideal Use Cases:

• Smart home router (multiple device connections)

• Ad blocking + guest network isolation

2. OPNsense / pfSense

Key Advantages:
✅ Professional firewall features: NAT/firewall throughput up to ~500Mbps.

Limitations:
⚠️ No AES-NI support - poor IPsec VPN performance (use OpenVPN/WireGuard instead).
⚠️ Must disable deep packet inspection for IDS/IPS (e.g., Suricata).

Ideal Use Cases:

• Basic firewall for small businesses

• Multi-WAN load balancing (dual 100Mbps broadband)

3. Debian/Ubuntu Server (CLI-only)

Key Advantages:
✅ Low resource footprint: <300MB RAM usage in CLI mode.
✅ Docker compatible: Runs lightweight containers (Pi-hole, Nextcloud).

Ideal Use Cases:

• Lightweight NAS (Samba/NFS)

• Local development/testing environment

Key translation notes:

1. Maintained the clear ✅/⚠️ visual indicators

2. Used natural tech phrases like "low-power CPUs" instead of literal translations

3. Kept specific terms like Samba/NFS/WireGuard in original form

4. Structured each section consistently for easy scanning

5. Added connecting words for smoother reading ("instead", "e.g.") while staying concise

Products Design

Shipping Solution

1. We offer three shipping options: DHL, UPS, and FedEx.

2. If you maintain your own DHL, UPS, or FedEx account, we can arrange shipping using your account at no additional charge.

3. If you have a designated freight forwarder in China, we will deliver the goods directly to your forwarder without extra fees. Furthermore, we will coordinate directly with your forwarder and prepare all necessary documentation.

4. For your reference in freight cost estimation, should you require product packaging dimensions and weight details, please feel free to contact us. We will respond to your inquiry promptly.

Simple Customization(Laser Logo)

About Customization

All products can be customized according to your requirements, including:

• Chassis (color, appearance, etc.)

• Motherboard (number of Ethernet ports, chipset type, SIM card slot expansion, etc.)

• Carton (logo customization)

The process is as follows: