Network Diagnostics
Linux Network Troubleshooter
Choose a network problem and generate a logical, read-only diagnostic sequence you can run from top to bottom.
🔒 Runs locally in your browserNo signup · No AI backend
Commands are generated locally in your browser. The default plan favors inspection and connectivity tests rather than configuration changes.
Diagnostic Plan
Run the commands in order and stop when you find the first failing layer.
Some commands may require packages such as
dnsutils/bind-utils, traceroute, mtr, or netcat. Run commands only on systems and networks you are authorized to diagnose.How to read the results
Layer 1Interface up?
Check link state first.
Layer 2IP + route?
Confirm addressing and gateway.
Layer 3Reachability?
Test gateway and remote IP.
Layer 4+DNS + service?
Resolve names and test ports/apps.