Minecraft Server のポート転送
開放するポート
なぜポート転送が必要?
Minecraft servers run on your home machine but need an open inbound port so friends outside your LAN can connect. Without port forwarding, players see "Connection refused" or "Can't reach server".
ルーターブランド別手順
TP-Link
- Open http://tplinkwifi.net or http://192.168.1.1
- Advanced → NAT Forwarding → Virtual Servers → Add
- External Port: 25565, Internal IP: your PC, Internal Port: 25565, Protocol: TCP
- Repeat for UDP 19132 if Bedrock
Netgear
- Open http://routerlogin.net
- Advanced → Advanced Setup → Port Forwarding/Port Triggering
- Add Custom Service → name "Minecraft", TCP 25565, point to PC IP
- Add second service for Bedrock UDP 19132
ASUS
- Open http://router.asus.com
- WAN → Virtual Server / Port Forwarding → Add profile
- Source: Any, Port Range: 25565, Local IP: your PC, Local Port: 25565, Protocol: TCP
セキュリティの注意
Run the Minecraft server under a non-admin OS user. Use whitelist (ops.json) and a strong RCON password. Block 25565 at the router if you stop running the server.