Minecraft server at home or on hosting?

You can run a Minecraft server on your own computer for free — the server software is a free download and it will run on a decent PC. So the question isn't whether it works, but what it involves once people outside your household need to connect. This article covers public IP addresses, port forwarding, upload speed, electricity, security and backups. At the end you will find an overview of when running at home makes sense and when hosting does.

When a home server is enough

For playing within one household or the occasional evening with a few friends, a home server is perfectly fine. If everyone is on the same network, you can simply choose "Open to LAN" in singleplayer and the others connect without any router configuration. A dedicated server set up following the Minecraft Wiki tutorial is also a good way to learn how a server works. The complications start when people from outside need to connect and the server should keep running while you're away from the computer.

Public IP address and CGNAT

For someone on the internet to reach a server at your home, you need a public IPv4 address. Many internet providers, however, place customers behind CGNAT (carrier-grade NAT): one public address is shared among several customers and incoming connections never reach you — port forwarding on your router won't help then.

How to check: look up the WAN address in your router's interface and compare it with the address shown by any "what is my IP" service. If they differ, or if the WAN address falls in the 100.64.0.0/10 range (reserved for CGNAT by RFC 6598), you are behind CGNAT. Some providers assign a public IPv4 on request. Connecting over IPv6 is another option, but it only works for players who have IPv6 themselves.

Forwarding port 25565

A Minecraft Java server listens on TCP port 25565 by default. With a public IP, you need to forward this port on your router to the computer running the server, and ideally give that computer a fixed address on your network so it doesn't change after a reboot. You also need to allow Java or the port through the operating system's firewall. The port is configured in server.properties (settings reference on the Minecraft Wiki).

If you don't have a public IP, there are tunnelling services (for example playit.gg), which relay traffic through their own server and don't reveal your home address to players. A simpler option is Mojang's official Realms subscription, though it offers limited customisation — you can't install your own plugins or an arbitrary modpack there.

Upload speed and connection stability

With a home server, the roles are reversed: you are the one sending world data, chunks and other players' movements, so upload speed matters, not download. Many home connections are asymmetric, with much lower upload. Usage grows with player count and view distance, and if someone in the household is streaming or uploading large files at the same time, players will feel it as lag. Likewise, a home internet outage or a router restart disconnects everyone.

A PC running 24/7 and electricity

If the server should run while you sleep or are at school or work, the computer has to run non-stop. Working out the electricity cost is simple: average power draw in watts × hours ÷ 1000 = consumption in kWh, multiplied by the price per kWh on your tariff. The average draw is best measured with a plug-in power meter.

On top of that, add wear on the computer, noise and heat in the room, and the fact that the server takes performance away when you want to play or work on the same machine.

Security and DDoS

When players connect directly to your home IP address, they know it. One unhappy player is enough for a DDoS attack to flood your whole home connection — not just Minecraft, but the entire household's internet. A home line cannot filter such an attack on its own. We cover what attacks on game servers involve in the article on DDoS attacks on game servers.

Basic security rules apply both at home and on hosting:

• Keep online-mode=true so the server verifies player accounts.
• On a private server, enable the whitelist and give OP only to people you trust — see the whitelist and OP guide.
• Keep the server and plugins updated. The Log4Shell vulnerability (CVE-2021-44228) showed in 2021 that a game server can become a way into your computer.
• Don't run the server under an administrator account, and download plugins only from trusted sources.

On a home PC, the server also runs next to your personal files, whereas on hosting it is separated from your private data.

Backups

A world your group has put dozens of hours into is just a folder on a disk. If the disk fails or an update breaks the world, you lose it without a backup. At home you have to handle backups yourself — ideally a copy on another drive or off the computer, taken with the server stopped or after saving the world. On hosting it is more convenient, but don't rely only on someone else's backups there either: with us, the server is backed up automatically every night and the last 5 days are kept, and you can also create, restore and download manual backups yourself in the panel. The steps are in the guide to backups and version changes.

Side-by-side comparison

What you get with BlazeHost

Our Minecraft servers run on our own hardware with AMD Ryzen 9 5900X processors and NVMe SSDs, colocated in the firstcolo FRA4 datacentre in Frankfurt am Main, with a 1 Gbit/s uplink per node. Always-on network-layer (L3/L4) DDoS protection with 7.4 Tbps capacity by Dataforest is included, so you can share your server address without worrying about your home connection. The server is set up automatically after payment and managed in the Pterodactyl panel. Plans start from 60 CZK per month — see the Minecraft plans, and read more about the infrastructure on the datacentre page.

To be fair about the limits too: a game server doesn't get its own IPv4 address — it runs on a shared address with its own port (you can connect without a port via your own domain and an SRV record), and you have access to the server, not the whole operating system. You can check how players see your server from outside with our server status and MOTD tool.

Summary

• At home makes sense for LAN play, occasional sessions with friends and learning — especially if you have a public IP, decent upload and the server doesn't need to run non-stop.
• Hosting makes sense when the server should run continuously, people you don't know will join, or you don't want to publish your home IP address.
• Before deciding, check for CGNAT and your upload speed, and work out the electricity cost with watts × hours ÷ 1000 × price per kWh.
• Backups and basic security (online-mode, whitelist, updates) are your responsibility in both cases.

Not sure which to choose? Get in touch and we'll advise based on how and with whom you want to play.