3Com Switch 7750 SeriesCommand Reference Guide – Password Control Chapter 1 Password Control Configuration Commands7When the password used to log into the switch expires, the switch requires the user tochange the password, and automatically saves the history (old) password to a file in theflash memory. In this way, the switch can prevent any user from using one singlepassword or the used password for a long time to enhance the security.Use the undo password-control { aging | length | history } enable command todisable password control.By default, password aging, limitation of minimum password length, and historypassword recording are all disabled.Using any of the undo password-control aging enable, undo password-controllength enable and undo password-control history enable commands, you canenable the password control feature globally. Then user passwords are protected andbecome invisible. If you want to modify the saved configuration file, you need to use thesave command.To disable the password control feature globally, however, you need to use the undopassword-control aging enable, undo password-control length enable and undopassword-control history enable commands all. All user passwords are cleared toavoid possible password cracking.Related command: password-control.Example# Enable password aging.[<3Com]>system-viewSystem View: return to User View with Ctrl+Z.[3Com] password-control aging enablePassword aging enabled for all users. Default: 90 days.# Enable the limitation of the minimum password length.[3Com]password-control length enablePassword minimum length enabled for all users. Default: 10 characters.# Disable password aging.[3Com] undo password-control agingPassword aging disabled for all users.# Enable history password recording.[3Com] password-control history enablePassword history enabled for all users.# Disable history password recording.[3Com]undo password-control historyPassword history disabled for all users.
