agentskillexchange/skills · skills/audit-linux-host-hardening-drift-before-exposing-ssh-or-rolling-to-production/SKILL.md

Audit Linux host hardening drift before exposing SSH or rolling to production skillA

Audit Linux host hardening drift before exposing SSH or rolling to production is agent-read markdown (skill) from agentskillexchange/skills: 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..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add agentskillexchange/skills/Audit Linux host hardening drift before exposing SSH or rolling to production@git:20260710.62afd0f
Exact content
mdr add agentskillexchange/skills/Audit Linux host hardening drift before exposing SSH or rolling to production@sha256:5bc12057a61f5069

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_fkkefrpgbdze7lsh.svg)](https://markdownregistry.com/a/art_fkkefrpgbdze7lsh)

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Versions

versioncommittedcommitsizeaudit
git:20260710.62afd0f latest2026-07-10 62afd0f 2,379 BA view · diff
git:20260710.29255102026-07-10 2925510 1,958 BB view · diff
git:20260518.471df3d2026-05-18 471df3d 2,368 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (2379 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

agentskillexchange/skills · 40 stars · license MIT · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_fkkefrpgbdze7lsh
GET https://markdownregistry.com/api/v1/resolve?ref=agentskillexchange/skills/Audit Linux host hardening drift before exposing SSH or rolling to production
GET https://markdownregistry.com/api/v1/blob/5bc12057a61f5069648986035b75a4c09ee113f00cb16f8544b4ff12c9d2b02f

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.