STIGUI
V-271841CAT II — Medium severitySV-271841r1092235_rule

OL 9 must log username information when unsuccessful logon attempts occur.

Rule version OL09-00-003022 · STIG v1 · 2026-08-21

Discussion

Without auditing of these events, it may be harder or impossible to identify what an attacker did after an attack.

Check

Verify that OL 9 logs username information when unsuccessful logon attempts occur.

Verify the "/etc/security/faillock.conf" file is configured to log username information when unsuccessful logon attempts occur with the following command:

$ grep audit /etc/security/faillock.conf audit

If the "audit" option is not set, is missing, or is commented out, this is a finding.

Fix

Configure OL 9 to log username information when unsuccessful logon attempts occur.

Add/modify the "/etc/security/faillock.conf" file to match the following line:

audit

Identifiers

Group ID
V-271841
Group title
SRG-OS-000021-GPOS-00005
Rule ID
SV-271841r1092235_rule
Check ID
C-75891r1092233_chk
Fix ID
F-75798r1092234_fix