Details
Anytime an authentication method is exposed so as to allow for the utilization of an application interface, there is a risk that attempts will be made to obtain unauthorized access.
By locking the account when the pre-defined number of failed login attempts has been exceeded, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced.
Specifying a time period in which the account is to remain locked serves to obstruct the operation of automated password guessing tools while allowing a valid user to reinitiate login attempts after the expiration of the time period without administrative assistance.
Solution
1. Access AC
2. From ‘Domain Structure’, select ‘Security Realms’
3. Select realm to configure (default is ‘myrealm’)
4. Select ‘Configuration’ tab -> ‘User Lockout’ tab
5. Utilize ‘Change Center’ to create a new change session
6. Set the following values in the fields as shown:
‘Lockout Threshold’ = 3
‘Lockout Duration’ = 15
‘Lockout Reset Duration’ = 15
7. Click ‘Save’, and from ‘Change Center’ click ‘Activate Changes’ to enable configuration changes
Supportive Information
The following resource is also helpful.
This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Unix.
References
- 800-53|CM-6b.
- CAT|II
- CCI|CCI-000366
- Rule-ID|SV-235938r628592_rule
- STIG-ID|WBLC-01-000034
- STIG-Legacy|SV-70479
- STIG-Legacy|V-56225
- Vuln-ID|V-235938