The F5 BIG-IP appliance must be configured to enforce the limit of three consecutive invalid logon attempts, after which time it must block any login attempt for at least 15 minutes.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-266069 | SRG-APP-000065-NDM-000214 | F5BI-DM-300013 | SV-266069r1024600_rule | 2024-09-20 | 1 |
| Description |
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| By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced. |
| ℹ️ Check |
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| From the BIG-IP GUI: 1. System. 2. Users. 3. Authentication. 4. Verify Maximum Login Failures set to "3". 5. Verify User Lockout set to "Automatically enable locked-out user after 900 seconds". From the BIG-IP console, type the following command: tmsh list auth password-policy max-login-failures Note: Check for a value of "3". tmsh list auth password-policy lockout-duration Note: Check for a value of "900". If the BIG-IP appliance is not configured to enforce the limit of three consecutive invalid logon attempts and lock out users for 900 seconds, this is a finding. |
| ✔️ Fix |
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| From the BIG-IP GUI: 1. System. 2. Users. 3. Authentication. 4. Set Maximum Login Failures to "3". 5. Set User Lockout to "Automatically enable locked-out user after 900 seconds". 6. Update. From the BIG-IP console, type the following commands: tmsh modify auth password-policy max-login-failures 3 tmsh modify auth password-policy lockout-duration 900 tmsh save sys config |