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minecraft/docs/networking.md
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Networking

Ports

Port Service Exposure
25565/tcp Minecraft Internet (port-forward this on your router)
8080/tcp Dashboard LAN/VPN only — never port-forward
25575/tcp RCON Docker-internal only (not published at all)

Letting friends connect

  1. Give the server machine a static LAN IP (router → DHCP reservation)
  2. Router → port forwarding → external 25565 → <server-lan-ip>:25565
  3. Friends connect to your public IP (curl ifconfig.me), or set up free dynamic DNS (DuckDNS et al.) so they can use a stable name like yourname.duckdns.org

Whitelist + EasyAuth handle the "random people found my server" problem — that's what they're for.

Keeping the dashboard private

The dashboard is deliberately not hardened for the open internet (it controls Docker). Reach it from outside your LAN with Tailscale (free, ~5 minutes):

# on the server
curl -fsSL https://tailscale.com/install.sh | sh
sudo tailscale up

Install Tailscale on your phone/laptop, log into the same account, and the panel is at http://<server-tailscale-ip>:8080 from anywhere — encrypted, invisible to everyone else. (WireGuard works just as well if you prefer to self-host the VPN.)

Optionally pin the port binding to specific interfaces in .env/compose, and firewall the host:

sudo ufw allow 25565/tcp
sudo ufw allow from 192.168.0.0/16 to any port 8080 proto tcp   # LAN only
sudo ufw enable

If you later want the panel on a domain

Put Caddy (or Traefik/nginx) in front for TLS + an extra auth layer, and keep 8080 unpublished. This repo doesn't ship that by default — open an issue with your domain setup and add a caddy service; the panel works fine behind a reverse proxy (plain HTTP upstream, cookie auth).

"Is it my internet or the server?"

Performance & Lag page. Server-side lag shows as low TPS / high MSPT (affects everyone equally); player-side lag shows as high ping for that player only. The page gives a plain-English verdict and per-player ping history so you can settle the argument.

Orion integration

Orion uses the dedicated managed Compose file in homelab-infra, with TCPShield and OPNsense. Follow orion.md and tcpshield.md; standalone direct-port examples above do not describe that ingress path.