Your machines don't need replacing.
They need a gateway.
DNS-CCN specialises in securing, connecting and monitoring the most complex legacy industrial environments. We've seen it all — from Windows 3.11 CNC controllers to DOS-based drip-feed systems — and we make them work safely in 2025 and beyond.
The DNS-CCN Approach
We don't advocate ripping out working machines. We advocate making them safe, visible, and connected.
Isolate Without Removing
Your legacy machines stay exactly as they are. The SEG gateway sits between the legacy network and your modern infrastructure — physically and logically separating them.
Bridge the Protocol Gap
SMB1, FTP, Serial, RS-232, DNC — the SEG translates and proxies these protocols securely, so your machines communicate without exposing your modern network to their vulnerabilities.
Full Visibility
Every file transfer, every connection attempt, every error — logged, monitored and surfaced in the DNS-CCN dashboard with real-time alerts and AI-assisted diagnostics.
Zero Production Disruption
Installation is non-disruptive. Machines continue running. The gateway integrates silently into your existing environment, requiring no changes to machine software or PLCs.
How Legacy Integration Works
A non-disruptive, physical gateway sits between your legacy machines and modern network — translating, isolating, and monitoring.
Supported Legacy Protocols
| Protocol | Risk Level | DNS-CCN Handling |
|---|---|---|
| SMB1 | Critical | Full isolation, no modern network exposure |
| SMB2 / SMB3 | Managed | Controlled bridging with audit logging |
| FTP / SFTP | Managed | Encrypted relay with session recording |
| RS-232 Serial | Isolated | Hardware-level serial-to-IP conversion |
| RS-485 | Isolated | Multi-drop bus isolation and monitoring |
| DNC Drip-feed | Managed | Real-time CNC program delivery with queue management |
| Proprietary CNC | Custom | Protocol analysis and custom adapters available |
Legacy Operating Systems
Our engineers have hands-on experience with every era of industrial computing. If your machines run it, we support it.
CNC Controllers Supported
Every major CNC brand, from flagship Fanuc to niche proprietary controllers — fully supported with custom protocol adapters.
Don't see yours? We offer custom protocol analysis and adapter development for any CNC system.
Ready to secure your legacy estate?
Our engineers have deployed the SEG gateway into some of the most complex legacy environments in Europe. Let's talk about yours.