Una sessione BGP stabilita è solo parte della connettività protetta. Servono anche annunci autorizzati, un’estremità raggiungibile, una MTU utilizzabile e un ritorno compatibile con il filtraggio.
La sezione segue il traffico dalla scelta della rotta alla consegna. Separa politica locale, accettazione upstream e capacità fisica: modificare una non risolve automaticamente i limiti delle altre.
Controlla autorizzazioni su ASN e prefissi, origini attese e politica del fornitore. La validazione dell’origine di una rotta non verifica l’affidabilità dell’intero percorso.
Confronta consegna instradata o in tunnel e interconnessione fisica. Documenta estremità, incapsulamento, MTU e ritorno; prova entrambe le direzioni prima di spostare il traffico di produzione.
Controlla quali percorsi restano dopo un guasto e come si distribuisce il traffico. FlowSpec e blackholing hanno ambiti diversi: definisci prima validazione, ritiro e ripristino.
Alcune guide sono disponibili solo in inglese. La lingua è indicata prima dell’apertura.
24 / 24 guide
IP transit latency is not only a matter of distance. BGP decisions, PoP location, return path, tunnels and mitigation design all influence how users experience a protected service.
Peering and IP transit do not behave the same way under DDoS pressure. This guide explains the routing, capacity, economic and operational differences for protected networks.
A multi-upstream DDoS design combines several transit providers, routing policies and mitigation layers to reduce single points of failure. This guide explains what it solves and what it does not solve by itself.
Upstream DDoS filtering protects a service before the attack reaches the customer port, firewall or server. This guide explains when it is useful, how it differs from blackholing and how to combine it with clean traffic delivery.
Anycast distributes traffic toward several points of presence, but it is not a magic shield. The clean delivery model after mitigation still decides latency, stability and customer experience.
BGP is the protocol that lets networks announce reachability to each other. Understanding prefixes, AS paths, communities and route preference is essential before buying protected transit.
Blackholing saves capacity by sacrificing a destination. FlowSpec can remove attack traffic more precisely, but only when rules are short, measurable and reversible.
A route hijack can divert, intercept or blackhole traffic before packets reach your infrastructure. DDoS planning must include routing security, monitoring and fast withdrawal procedures.
Use IPv4 packet length as one narrowly scoped FlowSpec condition, with correct byte accounting, fragment checks, enforcement evidence and a withdrawal plan.
TCP flags can make FlowSpec rules precise against SYN, ACK or RST floods, but they become risky when they ignore connection state, asymmetric routing and legitimate protocol behavior.
BGP FlowSpec is powerful for upstream relief, but it is not a full mitigation engine. Its limits appear around state, context, provider support, rule scope and false-positive risk.
Protected IP transit combines Internet connectivity and Anti-DDoS mitigation in the same delivery model. The benefit is not only attack absorption, but clearer routing, cleaner handoff and fewer emergency migrations.
A protected IP transit guide to choose between BGP, GRE, IPIP, VXLAN or cross-connect after Anti-DDoS mitigation.
Asymmetric routing is not automatically a problem in Anti-DDoS. The real question is which functions require strict symmetry, how clean traffic returns to production, and whether the provider depends on mechanisms such as SYN proxy. This guide explains when asymmetry truly becomes an issue, why some providers tolerate it poorly, and why at Peeryx it does not degrade filtering quality.
For hosters, MSPs and exposed service providers, Anti-DDoS IP transit is a network building block that protects prefixes, preserves commercial continuity and returns clean traffic to production. This guide explains how to evaluate it with an operator mindset instead of a simple marketing angle.
VXLAN and IPIP do not solve exactly the same clean traffic delivery problem after DDoS mitigation. This guide explains when each one makes sense, which limits matter and how to choose a model that matches your topology, edge design and operations.
Validate the handoff after mitigation: addressing, routes, MTU, both traffic directions, application behavior and recovery on each delivered path.
Plan tunnel termination and routing in a VM with explicit forwarding limits, route policies, host dependencies and an acceptance test beyond an established BGP session.
BGP Flowspec can be extremely effective to coarse-filter a DDoS attack, protect links and buy time for deeper mitigation. This guide explains where it creates real value, where it becomes dangerous and how to integrate it into a serious layered strategy.
Upstream Anti-DDoS pre-filtering is meant to relieve pressure early, protect links and reduce load before fine-grained decision layers take over. This guide explains when to use it, what it should actually do and why it changes the global cost/performance ratio.
In Anti-DDoS architecture, mitigation alone is not enough: legitimate traffic still has to be delivered back correctly. This guide explains why clean traffic handoff matters as much as scrubbing, how to choose the right delivery model and which mistakes break daily operations.
GRE remains one of the most practical ways to return clean traffic after Anti-DDoS mitigation. This guide also helps compare GRE tunnels, protected IP transit and clean handoff with real architecture, operations and buying logic.
A practical guide to link saturation, 95th percentile billing risk, blackholing, asymmetric routing, adaptive filtering and the importance of both Gbps and Mpps.
Simple GRE tunnel, GRE + BGP or protected IP delivery: this guide helps choose the right model depending on your architecture, prefixes, routing-control requirements, target latency and deployment speed.
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