GE B90 Instruction Manual page 17

CHAPTER 2: PRODUCT DESCRIPTION
• Security event reporting through the Syslog protocol for supporting Security Information Event Management (SIEM)
systems for centralized cybersecurity monitoring
• Strong encryption of all access and configuration network messages between the EnerVista software and UR devices
using the Secure Shell (SSH) protocol, the Advanced Encryption Standard (AES), and 128-bit keys in Galois Counter
Mode (GCM) as specified in the U.S. National Security Agency Suite B extension for SSH and approved by the National
Institute of Standards and Technology (NIST) FIPS-140-2 standards for cryptographic systems
CyberSentry user roles
CyberSentry user roles (Administrator, Engineer, Operator, Supervisor, Observer) limit the levels of access to various UR
device functions. This means that the EnerVista software allows for access to functionality based on the user's logged in
role.
Example: Administrative functions can be segmented away from common operator functions, or engineering type access,
all of which are defined by separate roles (see figure) so that access of UR devices by multiple personnel within a
substation is allowed.
One role of one type is allowed to be logged in at a time. For example, one Operator can be logged in but not a second
Operator at the same time. This prevents subsets of settings from being changed at the same time.
The table lists user roles and their corresponding capabilities.
Table 2-3: Permissions by user role for CyberSentry
Roles
Device Definition
Settings
|---------- Product Setup
|--------------- Security
(CyberSentry)
|--------------- Supervisory
|--------------- Display Properties
|--------------- Clear Relay Records
(settings)
|--------------- Communications
|--------------- Modbus User Map
|--------------- Real Time Clock
|--------------- Oscillography
B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
Figure 2-2: CyberSentry user roles
Administrator Engineer
Complete access Complete access
except for
CyberSentry
Security
R R
RW R
See table notes R
RW RW
RW RW
RW RW
RW RW
RW RW
RW RW
Operator Supervisor Observer
Command Authorizes Default role
menu writing
R R R
R R R
R See table R
notes
R R R
R R R
R R R
R R R
R R R
R R R
SECURITY
2
2-5