Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide

The Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide (V1 R8) has 439 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.

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Severity

Version

V1 · R8

CurrentPublished Wed Sep 30 2026

AlmaLinux OS 9 must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.

Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide

Assessment Title

Rule Text

AlmaLinux OS 9 must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.

Description

Discussion Text

Increasing the time between a failed authentication attempt and prompting to re-enter credentials helps to slow a single-threaded brute force attack.

Satisfies: SRG-OS-000480-GPOS-00227, SRG-OS-000480-GPOS-00226

New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.

Objective

V-269217

Rule

SV-269217r1050099_rule

Severity

medium

Rule Version

ALMA-09-015640

Documentable

false

IA Controls

NIST SP 800-53

Rev 5

Assessment Procedure

Check Text

Verify AlmaLinux OS 9 enforces a delay of at least four seconds between console logon prompts following a failed logon attempt with the following command:

$ grep -i fail_delay /etc/login.defs

FAIL_DELAY 4

If the value of "FAIL_DELAY" is not set to "4" or greater, or the line is commented out, this is a finding.

Implementation Procedure

Fix Text

Configure the AlmaLinux OS 9 to enforce a delay of at least four seconds between logon prompts following a failed console logon attempt.

Modify the "/etc/login.defs" file to set the "FAIL_DELAY" parameter to 4 or greater:

FAIL_DELAY 4

STIG check 111 of 439 in the Cloud Linux AlmaLinux OS 9 STIG checklist

← Previous · V-269216AlmaLinux OS 9 must not allow unattended or automatic logon via the graphical user interface.Next · V-269218 →AlmaLinux OS 9 must not allow blank or null passwords.