Hardening Linux Security Audits: Enhanced Lynis Scripts for Password Policy and DNS Auditing

Enhancing Lynis with Custom Linux Security Tests Cybersecurity / Linux Security • Auditing password aging policies and DNS resolver configurations through custom Linux security checks. Written by Pushkar Regode Introduction Lynis is an open-source security auditing tool designed to evaluate Linux system configurations and identify potential vulnerabilities. In this project, I explored the existing Lynis framework and developed custom security tests to analyze password aging policies and DNS resolver configurations. These enhancements aim to provide deeper visibility into authentication hardening gaps and network resolver security risks. Objective To analyze the default Lynis custom test structure to understand its auditing mechanism and identify limitations in baseline password and DNS checks. To develop and integrate two custom Lynis te...