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linux-hardening

Apply CIS benchmarks and secure Linux servers.

Skill by reverb256

IndexedLicense unknown
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/reverb256-linux-hardening

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Apply CIS benchmarks and secure Linux servers. Configure SSH, manage users, create non-root sudo users, implement firewall rules, and enable security features. Use when hardening Linux systems for production or meeting security compliance requirements. (Now includes SSH hardening from deprecated ssh-hardening skill)

Use cases: security, productivity

Reviews

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found
Runs as
Shell scripts

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/linux-hardening

What's inside

Skill name
linux-hardening
Description
Apply CIS benchmarks and secure Linux servers. Configure SSH, manage users, create non-root sudo users, implement firewall rules, and enable security features. Use when hardening Linux systems for production or meeting security compliance requirements. (Now includes SSH hardening from deprecated ssh-hardening skill)
License
unknown
Instructions
716 lines in SKILL.md · view on GitHub

Before installing

  • Ships executable scripts
  • Instructions read files in your home folder (~/.ssh, ~/.aws…)

Agent Skills spec issues

  • body: 716 lines (spec recommends under 500)
  • body: contains an absolute path from the author's machine

Files (6)

  • SKILL.md
  • ssh-hardening.conf · assets/
  • sysctl-hardening.conf · assets/
  • cis-checklist.md · references/
  • audit-system.sh · scripts/
  • harden-system.sh · scripts/

The license isn't open source, so the instructions aren't shown here. Read SKILL.md on GitHub

More from reverb256/hermes-skills

Signals

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Last commit (this folder)
Jul 1, 2026 (4 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
License unknown
Repository
github.com/reverb256/hermes-skills
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

More from reverb256

Cite this page

linux-hardening skill. Agent Mart. https://agentmart.dev/skills/reverb256-linux-hardening (last updated 2026-10-24)