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Step-by-step hardening of a fresh SSH server v1.0.0

Use this resource to initialize and harden a fresh Ubuntu or Debian server without losing access

New

  • 304 downloads
  • 101 likes
  • 120 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install ssh-server-hardening-init

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent checks your SSH key, installs the public key, creates a sudo user, changes the port and disables root and password login, then configures UFW and fail2ban. A lockout check comes before each step.

Mostly picked by

Updated November 2, 2026

Card for the “Step-by-step hardening of a fresh SSH server” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md : preliminary checks and public key installation
  • SKILL.md : sudo user, SSH port, UFW and fail2ban

Good fit for

  • You have just received an Ubuntu or Debian VPS
  • You want step-by-step hardening rather than a single script

Not for

    Tags

    • ssh
    • server
    • hardening
    • ufw

    About

    You say

    “Harden this fresh Debian VPS and keep my SSH key login working.”

    Card for the “Step-by-step hardening of a fresh SSH server” skill

    Skill published by reason-machines under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to initialize and harden a fresh Ubuntu or Debian server without losing access
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE0 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md13.6 KB

    Origin and licence

    Listed unmodified

    Author
    reason-machines
    Source
    github.com/reason-machines/security-skills/tree/1722e18788818fff1b0144132437936c2095971c/skills/server-security-init-skill
    Licence
    MIT

    Notice

    « server-security-init-skill » (reason-machines, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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