Back to site

Anti-DDoS and hosting: protect your infrastructure

· Upstream filtering, service continuity and key points before an attack.

A distributed denial-of-service (DDoS) attack aims to overwhelm your server or bandwidth with a flood of malicious traffic, making your service unreachable for legitimate users. For game servers, SaaS platforms, online stores and public APIs, Anti-DDoS protection is no longer optional — it is an essential component of any hosting infrastructure exposed to the Internet.

How upstream filtering works

Effective mitigation happens upstream — at the hosting provider's network level, before malicious traffic ever reaches your VPS. Anti-DDoS systems analyze packets in real time, detect anomalies (abnormal volumes, repetitive patterns, UDP amplification) and filter suspicious traffic while letting legitimate connections through without noticeable latency. This "upstream" approach preserves your CPU and RAM resources, which are never diverted to fight the attack themselves.

Basic solutions — a simple firewall or server-side rate limiting — quickly saturate against volumetric attacks of several gigabits per second, because they act too late, once the traffic has already reached the machine.

The main types of DDoS attacks

Types of DDoS attacks and risk level by exposed service
Attack type Network layer Typical target Risk level
Volumetric flood (UDP, ICMP) Network (L3/L4) Game servers, VPN High
SYN flood Transport (L4) Web servers, APIs High
DNS/NTP amplification Network (L3) Any public-facing infrastructure High
Application-layer HTTP flood Application (L7) SaaS, e-commerce, WordPress Moderate to high

Why it's critical for gaming and SaaS

Game servers (Minecraft, FiveM, Counter-Strike) are frequent targets: an attacker can take down your community in minutes with a simple UDP flood launched from a publicly available tool. SaaS platforms and exposed APIs, meanwhile, suffer from layer-7 HTTP attacks designed specifically to exhaust application workers rather than raw bandwidth. Without Anti-DDoS protection, a single attack can cause hours of downtime, direct revenue loss and lasting damage to user trust.

  • Gaming: protection against UDP/TCP floods targeting game ports directly.
  • SaaS and e-commerce: HTTP/HTTPS filtering to absorb massive request volumes without impacting the checkout flow.
  • Public APIs: detection of bots and aggressive enumeration or scraping patterns.

Anti-DDoS included vs. paid add-on

Always verify that your host includes Anti-DDoS protection natively, with no billing for detected incidents. Some low-cost offers charge for on-demand mitigation — a potentially very costly trap during a multi-day attack. Also ask about the mitigation threshold (capacity expressed in Gbps), the latency added by filtering under normal conditions, and the actual coverage of attack types (volumetric, protocol, application-layer).

Practical tip: never test your host's Anti-DDoS robustness yourself by launching an attack, even "just to see" — it is illegal and counterproductive. Instead, ask for their mitigation capacity report (in Gbps) and past incident statistics before subscribing to an offer for a critical service.

Additional best practices

Network protection never replaces thorough application hardening. Limit your port exposure, use a reverse proxy in front of your web services, enable Fail2ban on SSH, and keep all your services regularly updated. Monitor your traffic to catch anomalies before they escalate into a major incident — an unusual spike in connections is often the first sign of an attack being prepared.

Combined with an NVMe VPS in a protected European datacenter — like HolyCloud's infrastructure based in Paris — upstream Anti-DDoS mitigation guarantees continuity of service for your players, customers and users. This protection applies natively across our entire lineup, from the Minecraft VPS to our general-purpose gaming VPS, as well as our dedicated servers. To assess the protection level best suited to your project, check out our security guides or contact our team via the contact page.

Anti-DDoS protection Back to blog