agentskillexchange Audit Linux host hardening drift before exposing SSH or rolling to production
Uses Lynis to run an on-host security audit and turn the findings into a prioritized hardening checklist for an agent or operator. Invoke it when a machine is about to become internet-facing, after base image changes, or whenever you need a quick read on hardening drift instead of a generic vulnerability scan.
Prerequisites
Shell access to the target UNIX-like host, with root or sudo recommended for fuller audit coverage
Installation
Use the upstream install or setup path that matches your environment:
- git clone https://github.com/CISOfy/lynis
Requirements and caveats from upstream:
- Article by TechRepublic, considering Lynis a "must-have" tool: How to quickly audit a Linux system from the command line
Basic usage or getting-started notes:
There are multiple options available to install Lynis.
Software package
For systems running Linux, BSD, and macOS, there is typically a package available. This is the preferred method of obtaining Lynis, as it is quick to install and easy to update. The Lynis project itself also provides...
Source: https://github.com/CISOfy/lynis
Extracted from upstream docs: https://raw.githubusercontent.com/CISOfy/lynis/HEAD/README.md