Guides

Connectivity guides for the questions people ask right after the probe result.

Start with the outside-in answer, then use these walkthroughs to fix routing, port forwarding, DNS, and service configuration with less guesswork.

Check port 443 publicly

A practical guide to understanding external HTTPS reachability without conflating TCP openness with full TLS or application health.

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Is port 25565 open

What port 25565 results usually mean for Minecraft servers and why timeouts are different from explicit refusals.

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