How to Protect Your FiveM Server from DDoS Attacks

If you run a FiveM server with any meaningful player count, you will get DDoSed. It's not a question of if, it's when. Disgruntled players, rival communities, and booter services like Eulen make it trivially easy for anyone with $10 to launch an attack against your server.

Understanding DDoS Attack Types

Not all DDoS attacks are the same, and understanding the differences is crucial for choosing the right protection.

Layer 4 (Transport Layer) Attacks

Layer 4 attacks flood your server's network connection with raw traffic — UDP floods, SYN floods, and amplification attacks. These are the most common and easiest to mitigate. Most hosting providers offer basic Layer 4 protection. The goal is simple: overwhelm your server's bandwidth so legitimate traffic can't get through.

Layer 7 (Application Layer) Attacks

Layer 7 attacks are far more sophisticated. Instead of flooding bandwidth, they target the FiveM application itself — sending malformed game packets, exploiting connection handshakes, or overwhelming the server's script processing. These attacks look like legitimate player traffic, making them much harder to filter.

Why Generic DDoS Protection Fails for Game Servers

Services like Cloudflare are designed for HTTP/HTTPS web traffic. They're excellent at protecting websites, but FiveM uses UDP-based game traffic on custom ports. When you put Cloudflare in front of a game server, it either can't inspect the traffic properly or adds significant latency from the proxying overhead.

OVH's built-in anti-DDoS is better for game traffic but still relies on generic heuristics. It doesn't understand FiveM-specific protocol patterns, so it often either lets sophisticated attacks through or falsely blocks legitimate players during mitigation.

Path.net: Purpose-Built Game Mitigation

Path.net operates a 17Tbps+ global network specifically designed for game server and real-time application protection. Unlike generic CDNs, Path.net's mitigation infrastructure is tuned for UDP-based game protocols.

• Game-aware filtering: Path.net understands FiveM, Minecraft, Rust, and other game protocols at the packet level. It can distinguish between a real player connecting and a spoofed connection flood.
• Edge mitigation: Attacks are dropped at the network edge, before they ever reach your server. Your players experience zero impact during an attack.
• 17Tbps capacity: Even the largest volumetric attacks are absorbed without saturating the network.
• Low latency: Unlike proxy-based solutions, Path.net's mitigation adds less than 1ms of latency on clean traffic.

Server-Side Protections You Should Enable

Even with excellent network-level DDoS protection, there are steps you should take on your FiveM server to harden it against attacks:

1. Rate limiting: Configure your server to limit connection attempts per IP address. This prevents connection flood attacks from overwhelming txAdmin.
2. Whitelist your server port: Only expose the ports FiveM needs (default 30120). Close everything else in your firewall.
3. Use sv_projectName wisely: Don't broadcast unnecessary server information that attackers can use to identify your infrastructure.
4. Keep txAdmin updated: Each txAdmin release patches known vulnerabilities. Running outdated versions is an easy target.
5. Monitor server resources: Set up alerts for abnormal CPU, RAM, or bandwidth usage. Catching an attack early lets you respond faster.

What to Do When You're Under Attack

If your server is currently being DDoSed, here's a quick response checklist:

1. Contact your hosting provider immediately. If they have game-specific mitigation, they can enable stricter filtering rules.
2. Don't change your server IP unless your host recommends it. Attackers often monitor DNS changes and retarget immediately.
3. Check txAdmin logs for any unusual connection patterns that might indicate a Layer 7 attack vector.
4. If you're on a host without game-specific protection, consider migrating to one that offers it. The attack won't stop on its own.