If you run a game server, VPS, or any online service, DDoS attacks are one of the biggest threats you'll face. A single attack can take your server offline for hours, frustrate your players, and cost you money. Yet many server owners don't understand what DDoS attacks are or how to protect against them until it's too late.
What Is a DDoS Attack?
DDoS stands for Distributed Denial of Service. It's an attack where thousands of compromised computers (called a "botnet") simultaneously flood your server with fake traffic. The goal is simple: overwhelm your server so it can't handle real requests from your actual users.
Think of it like this: your server is a shop with one door. Normally, your players walk in and out easily. During a DDoS attack, someone sends 10,000 people to stand in your doorway, blocking real customers from entering. Your shop (server) is technically still running, but nobody can use it.
Types of DDoS Attacks
1. Volumetric Attacks (Layer 3/4)
These flood your server's network connection with massive amounts of data. Common types include:
- UDP Flood: Sends millions of UDP packets to random ports, forcing the server to process each one
- ICMP Flood: Overwhelms the server with ping requests
- DNS Amplification: Uses DNS servers to amplify traffic by 50-100x
These attacks are measured in Gbps (gigabits per second). A 10 Gbps attack can take down most unprotected servers. Modern botnets can generate 100+ Gbps attacks.
2. Protocol Attacks (Layer 4)
These exploit weaknesses in network protocols:
- SYN Flood: Sends thousands of connection requests without completing them, exhausting the server's connection table
- TCP State Exhaustion: Opens connections and holds them, consuming server resources
3. Application Attacks (Layer 7)
These target the application itself rather than the network. For game servers, this might mean sending malformed game packets that crash the server software, or repeatedly joining and leaving to exhaust resources.
Why Game Servers Are Targeted
Game servers are disproportionately targeted for DDoS attacks. Here's why:
- Competitive advantage: In competitive games, rival servers or players DDoS opponents to win
- Easy targets: Most game servers are run by individuals without enterprise security
- Visible impact: Taking down a game server is immediately noticed by players, giving the attacker satisfaction
- Extortion: Some attackers demand payment to stop the attack
- Low cost: DDoS-for-hire services cost as little as $10/month, making attacks accessible to anyone
Minecraft servers are especially targeted. A study found that Minecraft is the #1 game targeted by DDoS attacks, followed by FiveM and other multiplayer games.
How DDoS Protection Works
DDoS protection works by filtering malicious traffic before it reaches your server. There are several approaches:
Network-Level Filtering
Your hosting provider's network detects and drops malicious packets at the edge of their network. This happens before traffic even reaches your server, so your server doesn't feel any impact. This is how Azion Cloud's DDoS protection works — attacks are absorbed by our infrastructure, not your server.
Rate Limiting
Limits the number of requests from any single IP address. If one IP sends 1,000 packets per second while normal players send 10, the system blocks that IP.
Traffic Analysis
Advanced systems analyze traffic patterns in real-time. They can distinguish between a real player's game packets and a bot's flood traffic based on packet structure, timing, and behavior.
Anycast Routing
Distributes traffic across multiple data centers globally. An attack that might overwhelm one location gets split across many, diluting its impact.
What Happens Without Protection?
Without DDoS protection, even a small attack (1-5 Gbps) will:
- Take your server completely offline
- Cause packet loss and extreme lag for all players
- Potentially get your IP null-routed by your provider (they block ALL traffic to protect their network)
- Force you to get a new IP or wait hours for the attack to stop
How to Protect Your Server
1. Choose a Host with Built-In Protection
The easiest and most effective solution. All Azion Cloud hosting plans include enterprise-grade DDoS protection at no extra cost. This means you don't need to configure anything — protection is automatic.
2. Don't Share Your Server IP
Attackers need your IP to attack you. Use a proxy or domain name instead of sharing the raw IP. For Minecraft, tools like TCPShield or BungeeCord can hide your backend server's IP.
3. Keep Software Updated
Outdated server software may have vulnerabilities that attackers can exploit. Always run the latest version of your game server, plugins, and operating system. Read our Minecraft-specific DDoS protection guide for more details.
4. Configure Connection Limits
Set maximum connection rates in your game server config. For Minecraft, adjust connection-throttle in server.properties. For FiveM, configure sv_maxclients and connection throttling in your server.cfg.
5. Have a Response Plan
Know what to do during an attack:
- Don't panic — most attacks stop within 30-60 minutes
- Contact your hosting provider's support
- If your IP is compromised, request a new one
- Document the attack for potential reporting
DDoS Protection Comparison
| Protection Type | Cost | Effectiveness |
|---|---|---|
| No protection | Free | 0% — any attack takes you offline |
| Cloudflare (website only) | Free-$20/mo | Good for websites, doesn't protect game ports |
| Host-included protection | Included | Good — handles most attacks automatically |
| Enterprise (OVH, Path.net) | $50-200/mo | Excellent — handles massive attacks |
Bottom Line
DDoS protection isn't optional for game servers — it's essential. If you're running any public-facing server, you will eventually be targeted. The question is whether your server stays online when it happens.
All Azion Cloud plans include DDoS protection by default, so you can focus on building your community instead of worrying about attacks.