3Com Switch 4500 26-Port, Configuration Manual

Page: 342 / 396

340 C
HAPTER
20: P
ASSWORD
C
ONTROL
C
ONFIGURATION
O
PERATIONS
History password
recording The password configured and once
used by a user is called a history (old)
password. The switch is able to
record the user history passwords.
User cannot successfully update
their passwords if they use a history
password.
The history passwords are saved in a
readable file in the flash memory so
they will not be lost when the switch
reboots.
The system hot-backs up the history
passwords such that they keep
synchronized between the primary
and secondary SRP cards (that is, the
main control cards) of the switch.
Telnet, SSH, super, and FTP
passwords.
Password protection
and encryption The switch takes protection measure
on the password displaying. No
matter where a password is
displayed (in the configuration file or
on the command line), it is always
displayed as a string containing only
the asterisk (*) characters.
The switch encrypts the configured
passwords and save the passwords
in ciphertext mode in the
configuration file.
Telnet, SSH, super, and FTP
passwords.
Login attempts
limitation and failure
procession You can use this function to enable
the switch to limit the times of login
attempts allowed for each user.
If the login attempt times of a user
exceeds the configured maximum
times, the user fails the login. In this
case, the switch operates in one of
the following procession mode:
1 Inhibit the user from re-login
within a certain time period.
After that period of time, the
user is allowed to log in the
switch again.
2 Inhibit the user from re-login
forever. The user is allowed to
log in the switch again only after
the administrator manually
removes the user from the user
blacklist.
3 Allows the user to log in again.
By default, the switch adopts the
first mode. In actual, you can
configure the procession mode.
Telnet, SSH, and FTP
passwords: the limitation and
all the three modes of
procession are applicable.
Super passwords: the
limitation and the first mode
of procession are applicable.
Table 368 Functions Provided by Password Control
Function Description Application