Net Test Scan / Manual

NETWORK NOTES

Network troubleshooting manual

A practical manual for identifying where a connection fails, from the first DNS lookup to the response from a remote service.

A request travels from a device through a router to a destination serverDeviceRouterServerLocal networkInternet
Each part of the path can add delay or introduce a separate failure.

Start with a baseline

Record one successful request from the same device. When a fault appears, compare it against that baseline before changing settings.