Recommended Practice
Securing Control and Communications Systems in Rail Transit Environments
Part IIIb: Protecting the Operationally Critical Security Zone
Abstract
This document covers recommended practices for securing control and communications security systems in the Operationally Critical Security Zone (OCSZ) in rail transit environments.
Document History
| Document Number | Version | Publication Date | Publication | Related Information |
|---|---|---|---|---|
| APTA SS-CCS-RP-004-16 | 10/26/2016 | Published | Current |
Keywords
operationally critical security zone (OCSZ), control and communications security, cybersecurity,Demilitarized Zone (DMZ), rail transit vehicle, SCADA (supervisory control and data acquisition), wireless communication, Virtual private network (VPN), incident response, secure coding
Summary
This document provides control and communications security systems designed to protect a transit agency’s OCSZ, including traction power and non-life-safety critical SCADA systems. Systems in this zone must be protected from cyber-risks to ensure proper functioning of the transit system.
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