Lynis vs Vuls
GitHub Stats
About Lynis
Lynis is an open-source security auditing and hardening tool for Linux, macOS, and BSD systems. It performs hundreds of individual tests covering file permissions, kernel parameters, authentication settings, firewall rules, service configurations, network settings, and installed software against known security baselines. Lynis checks compliance against CIS benchmarks, ISO 27001, PCI DSS, and HIPAA requirements, generating a detailed report with a hardening index score and specific remediation suggestions. Unlike vulnerability scanners that look for known CVEs, Lynis focuses on configuration hygiene — finding weak SSH settings, world-readable files, unpatched software, unnecessary services, and missing security controls. The tool runs entirely locally with no network dependencies, making it suitable for air-gapped environments and systems where agents cannot be installed. With over 15,000 GitHub stars, Lynis is the most widely used open-source system hardening tool, commonly run as part of deployment validation and periodic security reviews.
About Vuls
Vuls is an agentless vulnerability scanner written in Go that detects known vulnerabilities in Linux, FreeBSD, containers, WordPress installations, and programming language libraries. It connects to target systems via SSH, collects package information, and cross-references against multiple CVE databases including NVD, OVAL, and vendor-specific advisories to produce detailed vulnerability reports. System administrators and security teams use Vuls to maintain continuous visibility into their infrastructure's vulnerability posture without deploying agents on every host. Its agentless architecture, Slack and email notifications, and integration with vulnerability management dashboards make it particularly suited for organizations managing large fleets of heterogeneous Linux and FreeBSD systems.
Platform Support
Tags
Lynis only
Vuls only