Lynis is a free open source security auditing tool for UNIX-base systems like Linux, macOS, FreeBSD, Raspberry Pi, etc
Lynis is an open source security auditing tool. Used by system administrators, security professionals, and auditors, to evaluate the security defenses of their Linux and Unix-based systems. It runs on the host itself, so it performs more extensive security scans than vulnerability scanners.
Security auditing tool for Linux, macOS, and other Unix-based systems.