Anti-DDoS guidePublished on 7 May 2026Reading time: 16 min
How Anti-DDoS works: from raw attack traffic to clean delivery
Understand how Anti-DDoS filtering absorbs volumetric attacks, separates legitimate users from hostile traffic and delivers clean traffic to transit, servers and gaming services.
Detection before saturation
A DDoS attack becomes dangerous when it exhausts a scarce resource before legitimate users can be served.
Filtering by layer
Local firewalling is useful for small noise, but it is too late when the access link or upstream port is saturated.
Clean traffic delivery
empties, a hosting customer opens urgent tickets, a business VPN becomes unreachable and a provider’s reputation…
An Anti-DDoS system is not a magic box that blocks everything with a single rule. A serious setup observes traffic before saturation, distinguishes normal service behaviour from attack patterns and returns clean traffic through a delivery model that matches the customer: BGP, tunnel, cross-connect, router VM, dedicated protected server or specialised gaming proxy. The goal is not only to survive a large flood, but to keep legitimate users online while the attack is still active.
This guide explains the path from raw hostile traffic to usable traffic. It is written for hosting providers, game communities, SaaS teams and network operators that need a practical answer to DDoS risk without losing control of routing, latency or application logic.
Anti-DDoS guide
Need clean traffic delivery, not just blocking?
Peeryx can deliver Anti-DDoS protection through protected transit, tunnels, cross-connect, protected servers or gaming proxy depending on your topology.
The real problem: saturation, state and bad filtering
A DDoS attack becomes dangerous when it exhausts a scarce resource before legitimate users can be served. That resource may be transit capacity, packets per second on a port, firewall state, TCP backlog, CPU on a proxy, or an application endpoint that performs expensive work. Looking only at Gbps is therefore misleading: a modest high-PPS flood can break equipment faster than a larger but simpler stream.
The second problem is collateral damage. Blocking all UDP, all traffic from one country or every source that opens many connections may stop part of an attack, but it can also break real players, API clients, VoIP sessions or BGP customers. A good Anti-DDoS design therefore filters as early as possible while preserving the exact protocol behaviour the service needs.
Detection before saturation
An Anti-DDoS system is not a magic box that blocks everything with a single rule. A serious setup observes traffic before saturation, distin...
Filtering by layer
This guide explains the path from raw hostile traffic to usable traffic. It is written for hosting providers, game communities, SaaS teams a...
Why this matters for revenue and reputation
DDoS downtime is visible immediately. A game server empties, a hosting customer opens urgent tickets, a business VPN becomes unreachable and a provider’s reputation suffers long before a formal SLA claim appears. For a small or fast-growing company, one major incident can cost more than the monthly protection budget because users remember unreliability.
It also matters commercially. Buyers of dedicated servers, protected transit or gaming proxy services do not only buy capacity. They buy confidence that their service can remain reachable during an attack and that the provider understands the difference between generic filtering and clean traffic delivery.
Possible protection models
Local firewalling is useful for small noise, but it is too late when the access link or upstream port is saturated. A classical cloud scrubbing centre can absorb large traffic, but the handoff must be designed carefully: GRE, IPIP, VXLAN, BGP announcement, cross-connect or router VM all have different operational consequences.
For a server owner without BGP, a protected dedicated server or reverse proxy is often simpler. For an operator or hoster, protected IP transit is usually more flexible because prefixes can be announced, clean traffic can be returned and the customer can keep its own routing or firewall logic behind the protection layer.
Peeryx starts by separating the volumetric problem from the application problem. Large floods are reduced before they reach customer infrastructure, while protocol-specific and gaming-aware controls are applied only when they are useful. This avoids the common mistake of turning every incident into a blind blocklist that hurts legitimate users.
The delivery model is chosen according to the customer’s control level. A network operator can use protected IP transit with BGP or tunnels, a hosting provider can combine clean traffic handoff with its own edge, and a gaming service can use a proxy model when the origin must stay hidden.
Concrete example: from attack to clean traffic
Imagine a European game hosting provider selling dedicated servers and FiveM instances. During an attack, raw traffic targets both UDP ports and TCP services. Peeryx can absorb the flood upstream, filter obvious junk before the customer link, and deliver clean traffic to the provider through the agreed model.
If the customer has BGP, prefixes can be announced through protected transit. If it does not, the service can be protected through a tunnel, a protected server or a reverse proxy. The goal is the same: the origin infrastructure sees usable traffic instead of the full attack.
Frequent mistakes
Many teams buy protection only after the first outage, when DNS, routing and customer communication are already under pressure. Others rely on a single host firewall, although the attack will saturate the port before that firewall can help.
Another common mistake is to compare only advertised Tbps. Capacity matters, but clean traffic return, latency, operational response and protocol understanding matter just as much. A protection that keeps the link alive but breaks the application is not a real solution.
Buying after the first outage
Comparing only advertised capacity
Forgetting clean traffic return
Why choose Peeryx
This part of “How Anti-DDoS works” clarifies what really changes the decision: false positive risk, filtering point, false-positive tolerance and delivery model.
This approach is especially useful for European hosters, game platforms and infrastructure teams that need low latency, control over routing and a clear upgrade path as traffic grows.
Protected IP transit
Detection before saturation
Protected dedicated server
Filtering by layer
Gaming reverse proxy
Clean traffic delivery
FAQ
Does Anti-DDoS add latency?
A well-designed protection layer can add a small amount of latency, but the topology matters more than the word Anti-DDoS itself. Local delivery points, clean routing and the right handoff model keep the impact controlled.
Is protected transit better than a proxy?
It depends on the service. Protected transit is ideal when you operate networks or prefixes. A proxy is simpler when the origin must stay hidden or when the protocol benefits from specialised handling.
Can Anti-DDoS stop every attack automatically?
No provider can honestly promise that. The objective is to reduce attack traffic, preserve legitimate flows and adapt rules when the attack changes.
Do I need BGP to use Peeryx?
No. BGP is useful for operators, but tunnels, protected servers and gaming proxy models can protect customers without their own ASN.
Conclusion
The right conclusion is operational: mitigation must remain measurable, explainable and adapted to the exposed service. Protocol, latency, filtering point and clean delivery matter as much as advertised volume.
Resources
Related reading
To go deeper, here are other useful pages and articles.
Send Peeryx the service to protect, the preferred handoff model and your latency constraints. We can map a concrete architecture with the filtering point, clean traffic return and operational limits clearly identified.
