System security is crucial for your system and property, you can set the password strength and lock IP address to prevent malicious attacks, and set other security policies to increase the security of the system.

1. Click Security > Security Settings to open the Security Settings page.
2. Set Lock IP Address switch to ON and the number of failed login attempts is limited.
   1. Select the allowable login attempts for accessing HikCentral Professional.
      Note:

      Failed login attempt includes failed password attempt and failed verification code attempt.

   2. Set the locking duration for this IP address. During the locking duration, the login attempt from this IP address is not allowed.

   The number of login attempts is limited.

3. Select the Minimum Password Strength to define the minimum complexity requirements that the password should meet.
4. Set the maximum password age.
   1. Set Enable Maximum Password Age switch as ON to force user to change the password when password expires.
   2. Set the maximum number of days that the password is valid.
      Note:

      After this number of days, you will have to change the password. You can select the pre-defined time length or customize the time length.

5. Configure the settings to automatically lock the Control Client after a time period of inactivity on the Control Client.
   1. Set Auto Lock Control Client switch to ON to lock the Control Client after a time period of inactivity on Control Client.
   2. Select time period for user inactivity. You can select the pre-defined time period or customize the time period.
6. Click Save.