Open-Source Firewall Appliances

Open-Source Firewall Appliances 

One rugged platform. Your choice of security OS. 

Vendor-neutral network security 

Enterprise-grade network protection without vendor lock-in. Deploy pfSense, OPNsense, Untangle or Sophos on purpose-built hardware — engineered for 24/7 mission-critical edge, from a fanless branch box to a redundant-PSU datacenter appliance. 

The platform 

Most security appliances tie you to a single vendor's software, one licensing model, and one upgrade path. When the subscription lapses or the hardware reaches end-of-life, you are forced into a costly refresh on the vendor's terms. 

We flip that model. You get a hardened, purpose-built hardware platform — and you choose the firewall operating system that fits your stack, your budget, and your compliance requirements. Run the same trusted hardware across every site, switch operating systems when your needs change, and redeploy units freely without licensing penalties. 

Every appliance is built around Intel hardware with AES-NI encryption acceleration and VT-x / VT-d virtualization, so you get line-rate VPN throughput and the option to virtualize your firewall on a hypervisor such as Proxmox VE — consolidating routing, security, and monitoring on one box. 

Why it matters 

No vendor lock-in 

Own the hardware outright and pick the OS. No forced subscriptions, no licensing traps, no vendor dictating your refresh cycle. 

Deploy anywhere 

One hardware family scales from a silent fanless branch unit to a redundant-PSU rackmount — same management, same images, every site. 

Lower total cost 

Open-source firewall OS options eliminate per-seat licensing. Re-image or repurpose any unit at no extra cost as needs evolve. 

How it works 

The appliance sits at the network edge between your internet uplink and your internal networks. All traffic passes through the firewall OS, where it is filtered, routed, encrypted, and inspected before reaching any internal zone — your LAN, a public-facing DMZ, or remote branch sites connected over VPN. 

Security at every layer 

Because the platform is vendor-neutral and scales across form factors, the same hardware secures radically different environments — from a factory floor to a hospital network to a multi-site retail chain. One core, many deployments. 

Hardware tiers 

Desktop Small — SOHO & branch edge 

Model: MNHO-095 

1U Rackmount — Core firewall 

Models: NSHO-002 / 005 / 006 / 007 / 147 

1U High-Availability — Mission-critical 

Models: NSHO-009 / 011 / 012 

Compute Node — Virtualized UTM / SIEM host 

Models: NGHC-241 / 242 / 243 

Choose your security OS 

pfSense (Open source) 

Battle-tested FreeBSD firewall with rock-solid stability and an enormous community. Best for: core routing & VPN concentration. 

OPNsense (Open source) 

Modern fork with rapid updates, a clean UI, and built-in IDS/IPS and reporting. Best for: security-first deployments. 

Untangle (Commercial) 

Application-aware filtering, content control, and simple, friendly dashboards. Best for: SMBs needing easy management. 

Sophos (Commercial) 

Enterprise-grade UTM with deep threat intelligence, sandboxing, and cloud management. Best for: distributed enterprise fleets. 

Platform highlights