3Com Switch 7750 Configuration Guide Guide

78
PASSWORD CONTROL CONFIGURATION
OPERATIONS
Introduction to
Password Control
Configuration
The password control feature is designed to manage the following passwords:
■ Telnet passwords: passwords for logging into the switch through Telnet.
■ SSH passwords: passwords for logging into the switch through SSH.
■ FTP passwords: passwords for logging into the switch through FTP.
■ Super passwords: passwords used by the users who have logged into the
switch and are changing from a lower privilege level to a higher privilege level.
Password control provides the following functions:
Table 631 Functions provided by password control
Function Description Application
Password aging
Password aging time setting: Users can set the
aging time for their passwords. If a password
ages out, its user must change it, otherwise
the user cannot log into the device.
All passwords
Password change: After a password ages out,
the user can change it when logging into the
device.
Telnet, SSH, and
Super passwords
Alert before password expiration: Users can
set their respective alert time. If a user logs
into the system when the password is about
to age out (that is, the remaining usable time
of the password is no more than the set alert
time), the switch will alert the user to the
forthcoming expiration and prompts the user
to change the password as soon as possible.
Telnet and SSH
passwords
Limitation of
minimum password
This function is used to limit the minimum
length of the passwords. A user can
successfully configure a password only when
the password is not shorter than its minimum
length.
All passwords
History password
function
History password recording function: The
password configured and once used by a user
is called a history (old) password. The switch is
able to record the user history password.
Users cannot successfully replace their
passwords with history passwords.
All passwords
History password protection function: History
passwords are saved in a readable file in the
Flash memory, so they will not be lost when
the switch reboots.