How DDoS Protection Works (And Why Your Game Server Needs It)

DDoS attacks are the most common threat to online game servers. If you've ever had your server suddenly lag out or go completely offline with no warning, there's a good chance you were hit. Here's what's actually happening, and how protection works.

What Is a DDoS Attack?

A Distributed Denial-of-Service (DDoS) attack floods your server with junk traffic until it can't handle legitimate players. The attackers use botnets (networks of compromised devices) to generate traffic from thousands of different IP addresses simultaneously.

Common Attack Types

| Attack Type | Target | What It Does | |------------|--------|-------------| | UDP Flood | Network bandwidth | Sends massive amounts of UDP packets to random ports, saturating the connection | | SYN Flood | Server CPU | Exploits the TCP handshake by sending SYN packets without completing connections | | HTTP Flood | Application layer | Overwhelms web-based server panels and APIs with legitimate-looking requests | | DNS Amplification | Network bandwidth | Exploits open DNS resolvers to amplify traffic by up to 50x | | NTP Amplification | Network bandwidth | Uses Network Time Protocol servers as reflectors to multiply attack volume |

How Protection Actually Works

Layer 4 (Transport Layer) Protection

At the network level, protection works by analyzing traffic patterns before they reach your server. When an attack is detected:

1. Traffic is routed through scrubbing centers: specialized infrastructure that inspects every packet
2. Legitimate game traffic is identified by protocol analysis (Minecraft TCP, Source Engine UDP, etc.)
3. Attack traffic is dropped at the network edge, never reaching your server
4. Clean traffic is forwarded to your server with minimal latency impact

Layer 7 (Application Layer) Protection

For attacks targeting game server protocols directly, application-layer filtering analyzes the actual game packets:

• Rate limiting per source IP on connection attempts
• Protocol validation: rejecting malformed or impossible game packets
• Challenge-response: requiring clients to prove they're real game clients
• Behavioral analysis: identifying bot-like patterns in connection timing and packet structure

Why "Included" Protection Matters

Some hosts charge extra for DDoS protection or only include basic filtering that doesn't handle larger attacks. A 10 Gbps UDP flood (common in competitive gaming communities) can take down an unprotected server instantly. Our protection handles attacks many times that size.

What to Expect During an Attack

1. Detection: Our monitoring systems detect abnormal traffic patterns (typically within 5-15 seconds)
2. Mitigation: Attack traffic is filtered at our edge network; your server IP is never exposed to the attacker
3. Recovery: Once the attack subsides, routing returns to normal automatically
4. Notification: We log all mitigation events; you can see attack history in your control panel

What You Can Do on Your Side

While our network handles the heavy lifting, you can make your server more resilient:

• Enable whitelist mode when attacks are targeted at specific players
• Use strong passwords for admin/console access: many attacks come through compromised credentials
• Keep game server software updated: patches often fix exploits used for application-layer attacks
• Monitor your server logs for unusual patterns (thousands of connection attempts from random IPs)

DDoS protection shouldn't be a premium add-on. It should be table stakes. That's how we built Galaxy Nexus.