What a DDoS attack on a game server is
A distributed denial of service attack sends far more traffic to an address than its connection can take, from thousands of machines at once, usually hijacked devices rented out by the hour. Nobody needs to break into the server itself: if its line is full of junk, real players' packets can't get in and everyone times out.
| Type | What it does | Who stops it |
|---|---|---|
| Volumetric (UDP floods and similar) | Fills the network link with junk | Network filtering, before the server |
| Protocol (SYN floods and similar) | Exhausts connections at the network layer | Network filtering |
| Application / bot attacks | Fake clients that join or ping the game nonstop | The server: whitelist, rate limits, anti-bot plugins |
Why Minecraft servers get attacked
Game servers are attacked far more than their size would suggest. A banned player wants revenge, a rival server wants your players, someone wants to show off on Discord. Attacks are cheap to rent and a server's address is public by design. If your server is popular enough for people to care, assume it will happen and plan for it.
How to tell whether it's a DDoS (or something else)
| Symptom | Likely a DDoS | Likely something else |
|---|---|---|
| Everyone disconnects at the same moment | Yes, if the panel shows the server running normally | A crash, if the console shows an error |
| TPS stays at 20 but nobody can join | Possibly | Firewall, wrong port, an authentication outage |
| TPS drops to 10 and stays there | Rarely | A farm, a plugin or too many entities |
| Hundreds of joins from random names | A bot attack | — |
If it's lag rather than disconnections, it's almost never a DDoS. Read everyone timing out at once and run spark before blaming an attack.
What DDoS protection does, and what it can't
Proper protection lives in the network, upstream of the server. Traffic to your address passes through filters that recognise attack patterns and drop them, while normal game traffic carries on. It's always on, so there's nothing to switch on when an attack starts, and your server only sees what's left.
- On every EnduranceNodes plan, enterprise-grade anti-DDoS protection is active 24/7, included in the price.
- No add-on and no “premium protection” upgrade. Hermes gets the same as Ender.
- One honest limit: if an extreme, unprecedented attack gets past mitigation, the targeted IP can be null-routed for a while to protect everyone else on the network. It's in our terms, and it's how every serious network works.
What network filtering can't do is tell a bot that completes a real login apart from a player. That part is the server's job:
- Keep the whitelist on for private servers: bots can't join a list they're not on.
- Leave
online-mode=true, so every account is verified by Mojang. - Behind a proxy, use Velocity's login rate limit; on large public servers, an anti-bot plugin.
- Don't expose RCON or the query port unless you actually need them.
Minecraft server security beyond DDoS
In our experience, “my server got hacked” is rarely a DDoS. It's usually one of these:
| Risk | How it happens | Fix |
|---|---|---|
| A stolen panel account | Reused password, a phishing link | Unique password and two-factor authentication (account security) |
| A backdoored plugin | A cracked “premium” plugin from a leak site | Download only from trusted sites (vetting) |
| Too much power | OP or * permissions given to a helper | LuckPerms groups, no OP for staff (dangerous nodes) |
| No way back | No recent backup when something goes wrong | Daily backups, one copy off the server (3-2-1 rule) |
| Insecure settings | Offline mode, open RCON | The settings that are security settings |
If you remember one thing
Pick a host where DDoS protection is always on and included, then do your part: whitelist or anti-bot measures, online mode, careful plugins, unique passwords with two-factor and backups. Together they stop almost everything.
Questions people ask
No. A game server can't filter network floods by itself; that has to happen upstream, in the hosting provider's network.
Yes. Enterprise-grade anti-DDoS protection, always on, covers every plan at no extra cost.
Not a network flood. Plugins help against bot joins and spam, which is a different kind of attack.
Check the panel: if the server is running and the console is clean, it's network-level and mitigation is dealing with it. Tell your players on Discord and contact support if it lasts.
A server's address has to be public for players to join. What matters is that it belongs to a protected network, not to your home.
About this article: It comes from what I have learned running EnduranceNodes, and it is published here first. We sell Minecraft hosting, so everything I say about us can be checked on this site, and I point out where we are not the best fit.