Title:

How to Configure Secure Services (HTTPS, SSH, and RADIUS) on SAGE RTU

Issue:

Need to enable secure communication and centralized authentication on SAGE RTU for compliance and cybersecurity.

Product:

SAGE Remote Terminal Unit (RTU) All models

Environment:

• Firmware version C3414-500-S02YZ or later
• Config@WEB GUI accessible via HTTPS
• User Manager and Configuration Converter tools installed on PC (.NET Framework 3.5+)

Cause:

Default configuration may allow insecure protocols (HTTP, Telnet, FTP). Secure services must be enabled to meet security standards and prevent unauthorized access.

Resolution:

1.- Enable Secure Services via GUI:

• Navigate to CPU Configuration → Services Setup.
• Select the following options for maximum security:
• • • HTTPS (Port 443) for encrypted web access
    • SSH Server (Port 22) for secure remote shell
    • SFTP for secure file transfer
    • Enable Remote Shell for VxWorks shell access
    • IPsec for VPN traffic encryption
    • Enable RADIUS Authentication for centralized user management

2.- Configure RADIUS Authentication:

• Enable RADIUS client in CPU Configuration.
  • Click Configure Servers and enter:
    • IP Address of RADIUS server
    • UDP Port (default 1812)
    • Retries and Timeout values
    • Shared Secret (must match on RTU and RADIUS server)
• Up to 5 RADIUS servers can be configured.

3.- Generate and Install Keys:

• SSH: Generate DSA/RSA keys for RTU and users; include in user package via User Manager.
• HTTPS: Replace default SSL key and certificate using Configuration Converter; generate custom files externally.

4.-Apply Changes:

• Upload updated configuration via GUI Up/Download tab.
• Perform RTU reset for changes to take effect.

Released for: Schneider Electric Ireland