# Ensure audit log storage size is configured

The 'max_log_file' parameter in the auditd configuration specifies the maximum size in megabytes that an audit log file can reach before it is rotated. Properly configuring this setting is crucial for effective log management and data retention, which are cornerstones of security monitoring and incident response. If the value is too small, critical security event data can be overwritten too quickly, leaving security teams blind to potential threats. If it is not configured, a log file could grow indefinitely, potentially consuming all available disk space and causing a denial of service. The audit script checks the current configured value in '/etc/audit/auditd.conf'. The remediation script sets this value to ensure a balance between retaining sufficient log data and managing disk space. The Basic state of 100MB is a minimal baseline for low-traffic systems. The Moderate state of 500MB is suitable for typical production servers, providing a larger buffer for forensic analysis. The Strict state of 1024MB or more is recommended for high-security or high-traffic environments, maximizing data retention for in-depth investigations and compliance with stringent regulatory frameworks.

## Recommended State Configuration

| Security Level | Value |
|----------------|-------|
| **Basic** | `[100, 'upper bound']` |
| **Moderate** | `[500, 'upper bound']` |
| **Strict** | `[1024, 'upper bound']` |
| **Type** | `RANGE` |

## Audit Script Working

Bash script that parses the '/etc/audit/auditd.conf' file. The script must find the line starting with 'max_log_file' and extract its numeric value. The output must be only the numeric value, with no additional text or formatting.

## Remediation Script Working

Bash script that accepts a single positional argument, which is the desired maximum log file size in megabytes (MB). The script must locate the 'max_log_file' parameter in '/etc/audit/auditd.conf', update its value to the one provided, and then restart the auditd service to apply the change. If the parameter does not exist, it should be added. The script must return 'true' on success and 'false' on failure.

