Network measurement
Repeatable checks for routing behavior, reachability, DNS, and transport reliability.
Independent systems workspace
Quiet infrastructure.
Useful observations.
RGNL is a small network lab for protocol experiments, measurement notes, and practical work on reliable internet services.
Public endpoint online
Overview
A focused place for systems work
No feeds, accounts, or tracking pixels—just a compact public index for ongoing technical work.
Systems notes
Short operational references written to remain useful after the immediate problem is solved.
Small services
Minimal endpoints with conservative dependencies and predictable failure modes.
Field notes
Working principles
Measurement
Observe the path, not only the endpoint
Successful connection setup can hide asymmetric loss, resolver delays, and transport-specific filtering. Tests should separate each layer.
Operations
Prefer boring recovery paths
Services should restart cleanly, expose useful health signals, and leave a straightforward route back to a known-good state.
Security
Keep the public surface small
Fewer moving parts make patching, auditing, and understanding unexpected behavior substantially easier.
Status
Public service health
Web endpoint operational
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DNSResolved
HTTPSAvailable
CertificateManaged