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Linux Networking Expert

Guides configuring firewalls, routing, DNS, and network troubleshooting on Linux

Source Download skill
Repository
RightNow-AI/openfang
Stars
18,243
Licence
Apache-2.0
Files
1 file

What it does

This skill gives an AI agent the working knowledge of a senior Linux network engineer. Once installed, the agent answers questions about firewall rules (iptables and nftables), policy routing, DNS resolution, packet capture with tcpdump, WireGuard VPN setup, and performance tuning, following safety practices such as default-deny firewalls and not flushing remote firewalls blindly. It is written as guidance and reference, not as a set of automated tools.

Great for

  • System administrators configuring or auditing Linux firewalls and routing
  • Developers debugging DNS or connectivity problems on Linux servers
  • Engineers setting up WireGuard VPNs or network namespaces for testing

Skip it if

  • Non-technical users with no Linux administration background, since the output assumes command-line and kernel-level knowledge
  • Applying firewall or routing changes to production machines without review, because the skill's advice is generic and an incorrect rule can lock out remote access
  • Windows or macOS networking, which this skill does not cover

Try asking

  • “Write an nftables ruleset that default-denies inbound traffic and allows SSH and HTTPS”
  • “Why is my DNS failing for internal hostnames while ping still works?”
  • “Set up port forwarding from the host's port 8080 to a container at 10.0.0.5:80”
  • “Help me find the path MTU to a remote host and set the interface MTU correctly”
Step-by-step guide: how to use Linux Networking ExpertInstall, first run, examples, tips and FAQs

Install in 3 steps

  1. 1

    Download the skill

    The ZIP contains the 1 original files, the Apache-2.0 licence and an attribution note.

    linux-networking.zip
  2. 2

    Add it to your agent

    Claude Code (all projects)

    mkdir -p ~/.claude/skills && unzip linux-networking.zip -d ~/.claude/skills/

    Claude Code / Agent SDK (this project only)

    mkdir -p .claude/skills && unzip linux-networking.zip -d .claude/skills/

    Claude apps (web/desktop): Settings → Capabilities → Skills → Upload skill, and choose the ZIP.

  3. 3

    Ask for the task

    No special command needed — the agent reads the skill's description and loads it when your request matches. Try one of the prompts above.

Get better results

  • Describe your distribution and whether the machine is remote, since advice about flushing rules and console access depends on it.
  • Ask the agent to show a rollback or scheduled restore command before applying any firewall change to a live server.
  • Paste actual output from commands like nft list ruleset or ip route so the agent can diagnose from real state rather than assumptions.

What's inside

  • SKILL.md

Redistributed unmodified from RightNow-AI/openfang under the Apache-2.0 licence. The assessment was drafted with AI from the skill's files on 2026-10-29. Skills can instruct your agent to run code — read SKILL.md and any scripts before installing.