H3C S6812 Series Command Reference Manual page 1926

Usage guidelines
The login-attempt policy depends on the view:
•
The policy in system view has global significance and applies to all user groups.
•
The policy in user group view applies to all local users in the user group.
•
The policy in local user view applies only to the local user.
A login-attempt policy with a smaller application scope has higher priority. The system prefers to use
the login-attempt policy in local user view for a local user.
•
If no policy is configured for the local user, the system uses the policy for the user group to
which the local user belongs.
•
If no policy is configured for the user group, the system uses the global policy.
If an FTP or VTY user fails to log in, the system adds the user account and the user's IP address to
the password control blacklist. When the maximum number of consecutive login failures is reached,
the login attempt limit feature is triggered.
Whether a blacklisted user and user account are locked depends on the locking setting:
•
If a user account is permanently locked for a user, the user cannot use this account unless this
account is removed from the password control blacklist. To remove the user account, use the
reset password-control blacklist command.
•
To use a temporarily locked user account, the user can perform either of the following tasks:
Wait until the locking timer expires.

Remove the user account from the password control blacklist.

•
If the user account and the user are blacklisted but not locked, the user can continue using this
account to log in. The account and the user's IP address are removed from the password
control blacklist when the user uses the account to successfully log in to the device.
NOTE:
This account is locked only for this user. Other users can still use this account, and the blacklisted
user can use other user accounts.
The password-control login-attempt command takes effect immediately after being executed, and
can affect the users already in the password control blacklist.
Examples
# Allow a maximum of four consecutive login failures on a user account, and disable the user
account if the limit is reached.
<Sysname> system-view
[Sysname] password-control login-attempt 4 exceed lock
# Use the user account test to log in to the device, and enter incorrect password for four times.
# Display the password control blacklist. The output shows that the user account is on the blacklist,
and its status is lock.
[Sysname] display password-control blacklist
Username: test
IP: 192.168.44.1
Blacklist items matched: 1.
# Verify that the user at 192.168.44.1 cannot use this user account to log in.
# Allow a maximum of two consecutive login failures on a user account, and disable the account for
3 minutes if the limit is reached.
Login failures: 4
14
Lock flag: lock