3Com Switch 4210 9-Port, Configuration Manual

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49
P
ASSWORD
C
ONTROL
C
ONFIGURATION
O
PERATIONS
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 408 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.
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.
Password protection
and encryption Encrypted display: The switch protects the displayed
password. The password is always displayed as a string
containing only asterisks (*) in the configuration file or
on user terminal. All
passwords
Saving passwords in ciphertext: The switch encrypts and
saves the configured passwords in ciphertext in the
configuration file.