Cyber Secured Service Unit

Improved Cyber Security for Lentronics SONET/SDH Multiplexers

GE Vernova’s Lentronics™ Cyber Secured Service Unit (CSSU) protects Lentronics Multiplexers against cyber threats, specifically those that target the reliability of the Bulk Electric System (BES). The CSSU is an essential security appliance that takes the place of a legacy Service or IP Service Unit, to better protect against malicious and unintentional network changes. It utilizes defense-in-depth strategies, allowing utilities to meet demanding security standards such as NERC CIP.

Acting as a secure gateway between Lentronics Multiplexers and the Lentronics VistaNET NMS software, CSSUs employ strong AES 256 bit encryption, SSL/TLS and X.509 digital certificates to ensure privacy and authenticity of users attempting to access the network.

Key Benefits

• Single hardware platform supporting two operating modes; Legacy and Secure

• Legacy mode: Interoperable with existing Service Unit/IPSU

• Secure mode: Network-wide AAA supported for improved access control and confidentiality

• Eliminates 2kHz tie cables between rings

• Extends network domains beyond 100 nodes

• Drop-in replacement without SONET/SDH payload traffic disruptions

• Supports Dual-Homed NMS paths

• Secure access-control with policy replication and distribution for a single, consistent security policy

• Prevents unauthorized user actions with hardware-based authorization

• RADIUS support for centralized and local authentication

• Provides event logging and secure event storage

• Provides confidentiality for NMS traffic with strong AES encryption