network-diagnostics
Installation
SKILL.md
Network-diagnostics
Instructions
For network troubleshooting:
- MTU Issues (common in WSL)
- Check current MTU: ip link show
- Test different MTU: sudo ip link set dev eth0 mtu 1350
- Common WSL MTU: 1300-1400
- DNS Resolution
- Check /etc/resolv.conf
- Test with: dig google.com, nslookup google.com
- Try different DNS: 8.8.8.8, 1.1.1.1
- Connectivity Tests
- Ping gateway: ip route | grep default
- Traceroute to destination
- Test ports: nc -zv host port, telnet host port
- Firewall/Routing
- Check iptables: sudo iptables -L
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