Minecraft server operations
Networking
Connection issues, DNS, domains, ports, and the checks that help players join reliably.
5 guides in this topic
How to Open Port 25565 for a Minecraft Server on Hetzner and Linux
Players cannot join even though the container is running? This guide checks Docker port publishing, the Linux firewall path, and the Hetzner Cloud Firewall without relying on misleading UFW assumptions.
Minecraft Domain Without a Port: How to Set Up an SRV Record
Want players to join via example.com instead of an IP and port? This guide shows how SRV records work for Minecraft Java Edition and how to configure them correctly.
Set Up Java and Bedrock Crossplay with Geyser and Floodgate
Want Bedrock players on phones or consoles to join your Java server? This guide shows a direct Paper-based Geyser and Floodgate setup without introducing a separate proxy layer.
Velocity Proxy Cannot Connect to a Backend in Docker: A Runbook
Fix Velocity backend connection failures by checking container state, Docker networks, service-name DNS, the container port, Paper readiness, and forwarding separately.
Run Geyser and Floodgate on a Velocity Proxy with Docker
Add Bedrock crossplay at the Velocity edge, publish UDP 19132 correctly, configure Floodgate authentication, and keep Geyser off the individual backends.