field notes
DDoS Protection for Game Servers: What Actually Helps, What Is Marketing
Most game servers will never get a real DDoS attack. The handful that do (typically Rust, popular Minecraft, sometimes Palworld) need something that actually works, not the 'unlimited DDoS protection' marketing on every host's homepage. Honest read on what works, what is theater.
Real protection vs. theater
The "unlimited DDoS protection" badge that appears on every game-host homepage is usually some combination of:
- Basic upstream bandwidth filtering by the datacenter (which is just normal good networking)
- Generic L3/L4 rate-limiting that catches amateur SYN floods
- Marketing language with no specific commitments
Real protection looks like: a published commitment to mitigate attacks up to N Gbps, a specific scrubbing-center provider (Cloudflare Spectrum, OVH VAC, Path Network), and a way to verify it during an actual attack (escalation procedure, status page transparency).
The reality for most game servers: real DDoS attacks are uncommon. Discord-tier "stress test" attacks are easily handled by any half-decent host. The serious attacks usually target specific Rust wipe servers, popular Minecraft communities with rival groups, or hosts visible enough to attract booter-as-a-service customers.
The layers (L3/L4 vs L7)
Two kinds of attack to worry about:
- L3/L4 (packet flood). Just send a ton of packets. Easy to detect, easy to filter upstream, the kind of attack any datacenter can handle if they cared to invest.
- L7 (application flood). Send valid-looking game traffic at huge volume. Harder to filter because the packets look legitimate. Requires game-protocol-aware mitigation.
Most "DDoS protection" sold by game hosts is L3/L4 only. That covers 90%+ of real-world attacks but does nothing for the rare L7 attacks. For Rust wipe servers and popular MC communities, L7 protection actually matters, for everyone else, L3/L4 is enough.
OVH Game-shield and the protocol gap
OVH's "Game Shield" is a well-known L4 DDoS scrubbing layer that knows about specific game protocols (Minecraft, Counter-Strike, etc.). For supported protocols, it gives genuine L7-aware filtering at a price most game hosts can offer.
The catch: it only knows the protocols it has been taught about. A recent r/OVHcloud thread "OVH Game DDoS Protection for an unsupported game protocol, is 'Other' useful?" (3p/11c) captures the question: if your game isn't on OVH's list, the "Other" protocol setting falls back to generic L4 filtering, which is fine for most cases but doesn't give the protocol-aware L7 mitigation.
Practical implication: if you're running Minecraft or CS on OVH, Game Shield is a real benefit. For Palworld, Rust (which is on the list), or other supported titles, also a real benefit. For everything else, treat OVH Game Shield as "good L4" rather than "specialized L7."
VPS-shield for home hosts
For home game servers, the most reliable DDoS protection isn't buying a service, it's hiding the home IP behind a tiny VPS that gets the public traffic.
A r/PrivatePackets thread "Protecting home game servers with a vps shield" walks through the pattern explicitly: cheap VPS at a major provider (OVH, Hetzner, DO) acts as the public-facing IP. UDP traffic gets forwarded to the home server over either iptables/nftables or a GRE tunnel. Home router has no port forward; ISP doesn't see game traffic.
The benefits stack up:
- If the VPS gets DDoS'd, the home network stays up. Just rebuild the VPS.
- DDoS protection at the VPS layer (OVH Game Shield, whatever) actually applies.
- Home ISP doesn't see UDP game traffic, doesn't trigger ISP-side anti-abuse rules.
- You can move providers freely, just update the tunnel endpoint.
The cost: a €5/month VPS and an hour of iptables setup. Cheaper than nearly any commercial DDoS-protected hosting plan.
What hosts actually offer
Concrete reality on common game hosts:
- OVH-backed hosts. OVH's network is one of the best for DDoS mitigation at the datacenter level. Hosts running on OVH (which is a lot of them) inherit Game Shield. Worth asking.
- Cloudflare Spectrum. Some hosts route UDP through Cloudflare's anycast network. Good L4 mitigation, slightly higher latency.
- Path Network. Specialist game-DDoS provider used by some Rust and MC hosts. Strong for sustained attacks.
- Datacenter-generic. Most hosts just rely on whatever their datacenter provides. Adequate for the median case, weak under serious attack.
How to verify: ask the host specifically which scrubbing provider they use, what attack volumes they've mitigated, and whether they publish a status page. Vague answers mean the marketing claim is theater.
A realistic protection plan
For most game servers: The default L3/L4 protection from any reputable host is sufficient. Don't pay extra for "premium DDoS."
For popular Rust/Minecraft communities: Pay attention to the host's actual scrubbing provider. OVH-backed or Path-backed hosts are real choices.
For home hosting: Run a €5 VPS as a forwarding shield. Better than most paid options, costs less.
For any host that promises "unlimited DDoS protection" with no specifics: It's marketing. Doesn't mean they're bad, just means the protection is generic.
The realistic worry isn't sustained DDoS, that's rare. The realistic worry is the <5-minute "stress test" that crashes one wipe night. Any decent host handles those.
FAQ
- Do I need DDoS protection for a 10-player Valheim server?
- No. The realistic attack surface for that size is zero. Any host's default L3/L4 covers anything you'll see.
- Is OVH Game Shield actually good?
- Yes, for supported protocols (Minecraft, CS, Rust, a few others). Real L4 + protocol-aware filtering at no marketing premium. For other protocols it falls back to generic L4 which is still better than nothing.
- What's a 'booter' attack?
- Booter (aka stresser) services are paid DDoS-for-hire platforms. They generate short L3/L4 floods, typically a few minutes long, for trivial prices. Common against popular Rust/MC servers from rival groups.
- Should I use Cloudflare Spectrum for my Minecraft server?
- If you have a community-scale MC server and have seen attacks, yes. Cloudflare's anycast routing absorbs attacks well. Adds 5-15ms latency depending on routing.
- Does a VPS-shield setup work for Palworld?
- Yes. iptables UDP DNAT forwards Palworld's port range (8211 UDP) to the home box. The setup is identical to other UDP games, the protocol is generic enough.