Reachability
Repeatable checks for DNS, routing and service availability without a heavyweight monitoring stack.
Small tools for observable networks
Understand the route,
not just the endpoint.
Harborline is a personal collection of lightweight utilities and field notes for diagnosing everyday network behaviour.
Path quality
Practical observations about latency, packet size and the points where otherwise healthy connections degrade.
Quiet operation
Small services with limited dependencies, conservative resource use and predictable failure modes.