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Linux firewall: UFW, iptables, nftables, fail2ban v1.0.0

Use this resource to lock down the firewall of a Linux server

New

  • 352 downloads
  • 112 likes
  • 116 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install linux-server-firewall

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 sets a default deny-inbound policy, opens only the ports you need with UFW and configures fail2ban for SSH and your services. You get a command sequence, with the way to avoid locking yourself out of the server.

Mostly picked by

Updated November 2, 2026

Card for the “Linux firewall: UFW, iptables, nftables, fail2ban” skill

Details

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

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What you get

  • SKILL.md: full UFW lockdown sequence and default policies
  • SKILL.md: iptables NAT rules, per-IP limits and fail2ban tuning

Good fit for

  • You set up a new server and want to lock it down
  • A legitimate service is blocked, or fail2ban bans by mistake

Not for

    Tags

    • firewall
    • ufw
    • fail2ban
    • server

    About

    You say

    “Lock down this Ubuntu server: SSH, HTTP and HTTPS only, with fail2ban on SSH.”

    Card for the “Linux firewall: UFW, iptables, nftables, fail2ban” skill

    Skill published by claude-dev-suite 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 lock down the firewall of a Linux server
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md14.8 KB

    Origin and licence

    Listed unmodified

    Author
    claude-dev-suite
    Source
    github.com/claude-dev-suite/claude-dev-suite/tree/e10ab644ba43abe2abc923399226df4af7337214/skills/infrastructure/firewall
    Licence
    MIT

    Notice

    « firewall » (claude-dev-suite, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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