dns-networking
Installation
SKILL.md
DNS & Networking
Debug DNS resolution, network connectivity, and HTTP issues. Covers dig/nslookup, port testing, firewall rules, curl diagnostics, /etc/hosts, proxy configuration, and certificate troubleshooting.
When to Use
- DNS name not resolving or resolving to wrong IP
- Connection refused / connection timed out errors
- Diagnosing firewall or security group rules
- HTTP requests failing for unclear reasons
- Proxy configuration issues
- SSL/TLS certificate errors
- Testing connectivity between services