Instruction Manual

USER’S GUIDE Managed Rack PDU
194
Security Features
Protection of passwords and passphrases
No password or passphrase is stored on the Rack PDU in plain text.
• Passwords are hashed using a one-way hash algorithm.
• Passphrases, which are used for authentication and encryption, are encrypted before
they are stored on the Rack PDU.
Summary of access methods
Serial access to the command line interface.
Remote access to the command line interface.
Security Access Description
Access is by user name and
password.
Always enabled.
Security Access Description
Available methods:
• User name and password
• Selectable server port
• Access protocols that can be
enabled or disabled
• Secure Shell (SSH)
For high security, use SSH.
• With Telnet, the user name and password are transmitted as
plain text.
• Enabling SSH disables Telnet and provides encrypted access
to the command line interface to provide additional protection
from attempts to intercept, forge, or alter data during
transmission.