How to Run Multiple Minecraft Servers on One Public IP

Direct answer

Multiple Java servers may share one public IP by using different TCP ports or a proxy with distinct backend listeners.

Recommended procedure

Assign a unique server-port to every independently reachable server, or give each proxy/backend its own listener and address.
If using Velocity, register the backends in velocity.toml under [servers] and route all public logins through the proxy.
Allow only intended public ports through host/router firewalls; restrict backend ports so untrusted users cannot bypass proxy authentication.

Why this matters

Networking problems are easiest to solve when you separate DNS, routing/NAT, firewalls, and the Minecraft process instead of treating them as one setting.

Important limitation: An SRV record can hide a Java port from players but does not merge port listeners or create a firewall rule.

How to verify the result

Connect to each destination and verify server switching and player identity; test that backend addresses reject direct public logins.

Version and compatibility notes

When a setting, command, or file name differs from this guide, stop and check the documentation for your exact Minecraft/server-software version instead of forcing an old example.

Official references

These sources were checked for the current MSH revision. Version-sensitive details should always be confirmed against the project documentation for the release you run.

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