network-connectivity-check

Diagnoses network connectivity issues via ping, port, and protocol checks.

2|Updated Feb 16, 2026

Search Tags:#troubleshooting #diagnostics #connectivity #network #port scan #ping

Ready to run

npx skills add https://github.com/dmzoneill/skills --skill network-connectivity-check

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: network-connectivity-check
Source: https://github.com/dmzoneill/skills/tree/main/network-connectivity-check
Command: npx skills add https://github.com/dmzoneill/skills --skill network-connectivity-check

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps diagnose and troubleshoot network connectivity problems to specified targets, identifying issues like reachability, DNS resolution, and port access.

Core Features & Use Cases

Reachability Checks: Performs ping sweeps and port scans to determine if hosts are online and accessible.
Protocol Verification: Tests HTTP, SSH, and TLS connections to ensure services are running and configured correctly.
Use Case: When a user reports they cannot access an internal application, this Skill can quickly determine if the issue is with their VPN connection, DNS, or a network route.

Quick Start

Use the network-connectivity-check skill to diagnose connectivity to the host 'example.com'.

Frequently Asked Questions about network-connectivity-check

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I diagnose network connectivity issues to a specific host?▼

To diagnose network connectivity, use this Skill to perform ping sweeps, port scans, and HTTP/TLS/SSH checks against your target host, quickly identifying DNS, routing, or port access failures.

What is the best way to troubleshoot a "no route to host" error?▼

Troubleshooting a "no route to host" error involves running ping sweeps and port scans to verify host reachability, allowing you to isolate whether the failure is a network route or VPN connectivity problem.

Do I need nmap and curl installed to run network diagnostics?▼

Yes, you need tools like nmap, curl, ssh, and openssl installed in your environment, as this Skill relies on these dependencies to perform comprehensive network diagnostics and protocol verification.

Can I verify SSH and TLS connections using a network connectivity check?▼

Yes, you can verify SSH and TLS connections during a network connectivity check by testing protocol configurations with openssl and ssh, ensuring remote services are running and correctly accessible.

Why does my internal application report reachability problems over a VPN?▼

Reachability problems over a VPN often stem from blocked ports or DNS resolution failures; running targeted port scans and HTTP checks helps determine if the VPN connection or network route is the root cause.