Troubleshoot Linux network connectivity and inspect system configurations.

Install

mkdir -p .claude/skills/network-info && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/1164" && unzip -o skill.zip -d .claude/skills/network-info && rm skill.zip

Installs to .claude/skills/network-info

Activation

This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.

Gather network configuration and connectivity details on Linux including interfaces, IP addresses, routing tables, DNS settings, and listening ports. Use when the user asks about IP configuration, network interfaces, connection issues, DNS resolution, open ports, routing, or network troubleshooting.
300 chars✓ has a “when” triggerlonger than Claude Code's old 250-char listing cap (fine on current versions)
Beginner

Key capabilities

  • Gather network interface and IP address details
  • Inspect routing tables and DNS configurations
  • Identify active listening TCP/UDP ports
  • Verify network connectivity status
  • Collect network device statistics

How it works

The skill utilizes standard Linux networking commands like ip, ss, and system configuration files to aggregate and report on the system's current network state.

Inputs & outputs

You give it
Linux network environment
You get back
Network configuration and connectivity report

When to use network-info

  • Troubleshooting network connectivity issues
  • Identifying open listening ports
  • Verifying DNS resolution configuration

About this skill

Network Information Skill

Explores network configuration and connectivity on Linux systems.

Suggested Workflow

  1. Run ./scripts/netinfo.sh for a structured overview of interfaces, IPs, routes, DNS, and listening ports.
  2. Check ip addr for interface status and assigned addresses.
  3. Verify routing with ip route and DNS with cat /etc/resolv.conf.
  4. Inspect listening services with ss -tuln to identify open ports.

Commands Reference

Network Interfaces

  • ip addr or ip a - Show all network interfaces and IP addresses
  • ip link - Show interface status (up/down)
  • cat /sys/class/net/*/address - MAC addresses

Routing

  • ip route - Show routing table
  • ip route get 8.8.8.8 - Show route to a specific destination

DNS Configuration

  • cat /etc/resolv.conf - DNS servers
  • cat /etc/hosts - Local host mappings
  • systemd-resolve --status - DNS status (systemd systems)

Active Connections

  • ss -tuln - Show listening TCP/UDP ports
  • ss -tupn - Show established connections with process info
  • cat /proc/net/tcp - Raw TCP connection data

Network Statistics

  • ip -s link - Interface statistics (bytes, packets, errors)
  • cat /proc/net/dev - Network device statistics

Tips

  • Use ip commands (modern) over ifconfig/netstat (deprecated)
  • The -n flag prevents DNS lookups for faster output
  • Check ss -tuln to see what services are listening

When not to use it

  • Modifying network configuration settings
  • Performing network penetration testing

Prerequisites

Linux system access

Limitations

  • Limited to Linux-based systems
  • Requires appropriate permissions to view certain network data

How it compares

It prioritizes modern ip and ss commands over deprecated tools like ifconfig and netstat for accurate, current system information.

Compared to similar skills

network-info side by side with the closest alternatives in the catalog.

SkillInstallsUpdatedSafetyDifficulty
network-info (this skill)34moReviewBeginner
debug-cluster28moReviewIntermediate
devops-troubleshooter14moNo flagsAdvanced
railway-deployment17moReviewIntermediate

Try saying

Example prompts that trigger this skill in your AI assistant.

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