16 GE INFORMATION D20MX INSTRUCTION MANUAL
CHAPTER 1: BEFORE YOU START
D20MX Processor
The D20MX is a single board computer built around a 667 MHz embedded PowerQUICC II
Pro processor. The D20MX supports open standard cyber security features that allow
interoperability in NERC CIP environments and introduces compliance to IEC standards;
refer to Appendix A,
Standards & Protection for the complete listing.
The D20MX can be retrofitted into either a D20 3U single-node VME chassis or D20 3U non-
VME chassis. In a single-node VME chassis, this one processor module replaces the
previous D20 M, M++, ME, and MEII CPU cards.
Due to aging printed circuit board assembly and mechanical constraints, only certain
chassis from 2002 and onward can be used with a D20MX. This comprises the following
chassis:
• D20 VME chassis 500-0280 Release 08 or higher,
• D20 Non-VME chassis 500-0305 Release 18 or higher
A solid partition between the Main processor bay and accessory bay prevents access to
the harness from the fiber card to D20MX card (only applicable to the 526-3005LF fiber
card version).
Security
The D20MX provides the following new security improvements over its predecessors:
• Centralized user authentication and authorization (RADIUS), including integration with
Microsoft Servers using NPS
• Role Based Access Control (RBAC) keeping operator and engineering activities
separated, logged and simple
• NERC compliant passwords, with strong complexity rules and one-way encrypted
• Full auditing including Syslog integration to enterprise systems
• SFTP for secure network-based firmware upgrades and configuration file transfers
• SSH for secure network access to WESMAINT II+. and the LogicLinx Executor. Refer to
Appendix E:
“Secure Connection for LogicLinx” on page 149 for details on securing
network access to the LogicLinx Executor.
To take advantage of these improvements, refer to the WESMAINT II+ for the D20MX
Configuration Guide (B014-1NCG) for details of these security features of the D20MX.
CyberArk A plug-in available from CyberArk Software Ltd. enables the D20MX to be integrated with
the CyberArk Privileged Identity Management (PIM) Suite. In addition to centralized user
authentication and authorization, integration with CyberArk, PIM provides a one-time
password model for the D20MX.
Contact CyberArk (http://cyberark.com) for details.
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