Lynis is an auditing tool for Unix system. It scans the system and available software, to detect security issues. Beside security related information it will also scan for general system information, installed packages and configuration mistakes.
This software aims in assisting automated auditing, software patch management, vulnerability and malware scanning of Unix based systems. It can be run even from a USB / CDROM and does not require write access to the system.
Compliance Audits: -
Lynis assists auditors in performing Basel II, GLBA, HIPAA, PCI DSS and SOX (Sarbanes-Oxley) compliance audits.
Lynis has more than 200 security checks and is available via RPM, DEB and Source.
Lynis can be found at rootkit.nl with documentation.