# Radware Hybrid DDoS & Cloud Signaling — On-Prem + Cloud, Seamless Diversion Source: https://ai.techclick.in/blog_radware_hybrid_ddos_cloud_signaling Markdown: https://ai.techclick.in/blog_radware_hybrid_ddos_cloud_signaling.md Publisher: Techclick Infosec Pvt Ltd A clear, interactive guide to Radware's hybrid DDoS model (2026): why one layer isn't enough, the division of labor between on-prem DefensePro and cloud DefensePipe, how Cloud Signaling (Defense Messaging) detects pipe saturation and auto-diverts traffic, and the BGP vs DNS diversion plumbing with the GRE return path — plus the single-vendor advantage of shared signatures and baselines. Radware Hybrid DDoS & Cloud Signaling — On-Prem + Cloud, Seamless Diversion student learning map A visual study map for Radware Hybrid DDoS & Cloud Signaling — On-Prem + Cloud, Seamless Diversion showing learning path, evidence, traps, and practice sequence. TECHCLICK STUDY MAP Radware Hybrid DDoS & Cloud Signaling — On-Prem... Radware · learn the flow, prove with evidence, avoid unsafe shortcuts 1. Start 🎯 By the end you will be able to 2. Understand Pick where you want to start 3. Prove ① Why one layer isn't enough — the... 4. Practice ② Division of labor — on-prem... How to use this page First build the mental model, then connect the concept to a realistic production decision. Finish by testing yourself. Techclick Infosec Pvt Ltd | ai.techclick.in | Training Contact: WhatsApp +91 92772 29456 Content-specific feature visual for this lesson: use it as the 60-second map before reading the full detail. Most engineers think… Most people picture DDoS defense as 'one big scrubbing service in the cloud that soaks up everything'. That mental model fails you in an interview and in production. Radware's answer is a hybrid system : an on-prem DefensePro appliance that kills low-latency, Layer 7 and encrypted attacks in real time, a cloud DefensePipe scrubbing center that absorbs volumetric floods, and Defense Messaging (Cloud Signaling) that keeps the two in sync — detecting pipe saturation , auto-diverting traffic, and passing live attack context so the cloud mitigates faster. Understanding that split is what lets you set thresholds correctly, choose BGP vs DNS diversion, and keep legitimate users online when a flood exceeds your pipe. ## ① Why one layer isn't enough — the case for hybrid The single most important idea: no one layer covers every DDoS attack . A cloud-only scrubbing service is great for sheer volume but adds latency and struggles with short, low-volume Layer 7 and encrypted attacks — sending every request out to the cloud and back is expensive and slow. An on-prem-only appliance is fast and precise, but it cannot survive a flood larger than your internet pipe: once the link saturates upstream, even a perfect box behind it is starved of bandwidth. Hybrid covers both. The on-prem appliance handles what needs to be near the application — instant, precise, low-latency mitigation — while the cloud absorbs the giant volumetric floods before they reach your link. The trick is keeping the two coordinated, which is exactly what Cloud Signaling does. Legend diagram title stage name what the stage does flow arrows & borders diagram canvas Figure 1 — The hybrid DDoS loop — baseline, detect, signal, divert, scrub, return On-prem handles the fast vectors; when the pipe is threatened, Cloud Signaling hands the flood to the cloud and clean traffic returns. - The hybrid DDoS loop — baseline, detect, signal, divert, scrub, return Baseline learn normal traffic Detect L7 / encrypted / volume Signal pipe-saturation alert Divert BGP / DNS to cloud Return clean via GRE On-prem handles the fast vectors; when the pipe is threatened, Cloud Signaling hands the flood to the cloud and clean traffic returns. Figure 2 — Cloud-only vs on-prem-only — why neither wins alone Each single-layer model has a fatal gap; hybrid pairs them to cover both. Cloud-only vs on-prem-only — why neither wins alone Cloud-only Huge volumetric capacity Adds round-trip latency Weak on short L7 / encrypted Attack travels to cloud first On-prem-only Low-latency, precise L7/TLS Real-time zero-day signatures Dies when the pipe saturates No capacity beyond the link Each single-layer model has a fatal gap; hybrid pairs them to cover both. Quick check · Q1 of 10 · Understand Why can't an on-prem-only appliance stop every DDoS attack? a) It is too slow for Layer 7 b) It cannot survive a flood larger than the internet pipe, which saturates upstream of the box c) It cannot inspect encrypted traffic d) It has no signatures Correct: b. Once a volumetric flood saturates the upstream link, the on-prem box is starved of bandwidth no matter how good it is. That is why the cloud layer absorbs volume before it reaches your pipe. 👉 So far: No single layer wins: cloud-only adds latency and is weak on short L7/encrypted attacks; on-prem-only dies when a flood saturates the internet pipe upstream of the box. ## ② Division of labor — on-prem speed, cloud scale Two halves, each doing what it is best at. DefensePro , the on-prem CPE at the data-center edge, owns low-latency defense. Its Behavioral DoS engine builds a real-time signature for a zero-day or unknown flood in about 18 seconds , with no human intervention. It mitigates encrypted (TLS/SSL) Layer 7 Web DDoS using behavioral TLS fingerprinting without decryption , and handles burst, pulse, DNS, IoT/Mirai and multi-vector attacks at line rate with minimal false positives. ### The cloud half The cloud DefensePipe / Radware Cloud DDoS service brings massive, scalable scrubbing capacity to absorb high-volume volumetric floods. It engages only when the customer's pipe is about to saturate, keeping the attack distant from the protected network. On-prem speed, cloud scale — neither alone is enough. Figure 3 — Two layers, one coordinated defense DefensePro near the app for speed and precision; DefensePipe in the cloud for scale; Defense Messaging keeps them in sync. Two layers, one coordinated defense On-prem DefensePro L7, encrypted, zero-day — low latency at the edge Cloud DefensePipe Volumetric scrubbing capacity at scale Defense Messaging Cloud Signaling syncs stats, signatures, baselines DefensePro near the app for speed and precision; DefensePipe in the cloud for scale; Defense Messaging keeps them in sync. 🛡️ DefensePro tap to flip Radware's on-prem appliance for real-time, low-latency app-layer and encrypted DDoS mitigation — builds a zero-day signature in about 18 seconds. ☁️ DefensePipe tap to flip Radware's cloud scrubbing service that absorbs huge volumetric floods, engaging only when the customer's pipe is about to saturate. 📡 Cloud Signaling tap to flip Defense Messaging — the channel that auto-triggers cloud diversion and shares live attack context (stats, signatures, baselines, policies). 🌊 Pipe saturation tap to flip When attack volume fills the internet link and chokes legitimate traffic — the trigger condition signaling watches for. Name the fast layer vs the big layer In an interview, separate the on-prem fast layer (DefensePro — low-latency L7, encrypted and zero-day defense at the edge) from the cloud big layer (DefensePipe — volumetric scrubbing at scale). The value of hybrid is using each where it wins, with Cloud Signaling tying them together. Quick check · Q2 of 10 · Remember Which layer is best at low-latency Layer 7 and encrypted DDoS defense? a) The cloud DefensePipe scrubbing center b) The BGP router c) The on-prem DefensePro appliance d) The DNS server Correct: c. DefensePro sits at the edge with low latency, builds zero-day signatures in about 18 seconds and fingerprints encrypted L7 without decryption. The cloud is for volumetric scale. 👉 So far: DefensePro = low-latency L7/encrypted/zero-day at the edge (signature in ~18s, no decryption); DefensePipe = scalable volumetric scrubbing in the cloud. ## ③ Cloud Signaling in action — detect, divert, share context Defense Messaging — Radware's Cloud Signaling channel — is what makes the two halves act as one. DefensePro continuously watches predefined pipe-saturation thresholds and security alerts. When bandwidth nears the limit, it automatically signals the cloud scrubbing center to take over (a manual trigger is also possible). Crucially, it does not just say 'help' — it sends live attack context : traffic statistics, attack info, signatures, floating policies and baselines. Because the cloud receives this context, it mitigates faster instead of re-learning the attack from scratch. The interview line: Cloud Signaling diverts the flood and hands over the playbook , so the scrubber starts where the appliance left off. Figure 4 — Defense Messaging at the center Cloud Signaling ties the appliance, the cloud and the diversion paths together, sharing one set of signatures and baselines. Defense Messaging at the center Defense Messaging Cloud Signaling DefensePro CPE DefensePipe cloud Pipe-sat threshold BGP diversion DNS diversion GRE return path Cloud Signaling ties the appliance, the cloud and the diversion paths together, sharing one set of signatures and baselines. Setting the threshold above your link is the classic trap If the pipe-saturation threshold is set higher than your actual link capacity, the pipe chokes before signaling ever fires and the cloud never engages. Always set the trigger comfortably below link capacity (e.g. 8 Gbps on a 10 Gbps link) and confirm automatic diversion is enabled. ### ▶ Watch a volumetric flood get diverted and scrubbed How a pipe-saturating flood is handled end-to-end. Press Play for the healthy diversion path, then Break it to see the classic failure. ① Flood hits A 40 Gbps UDP flood starts climbing toward the customer's 10 Gbps upstream link while DefensePro mitigates locally. ▼ ② Signal Bandwidth crosses the pipe-saturation threshold; Defense Messaging auto-signals the Radware cloud and ships attack context. ▼ ③ Divert BGP advertisements change (smaller-prefix); the network's traffic reroutes to the DefensePipe scrubbing center. ▼ ④ Scrub + return DefensePipe absorbs and cleans the flood at scale; clean traffic returns to the origin over the GRE tunnel. Press Play to step through the healthy diversion path. Then press Break it . ▶ Play Next ▶ ⚠ Break it ↺ Reset Quick check · Q3 of 10 · Apply Bandwidth is climbing toward your link limit during an attack. What makes Cloud Signaling divert traffic automatically? a) A predefined pipe-saturation threshold is crossed and Defense Messaging signals the cloud b) The CPU temperature rises c) An analyst manually edits DNS d) The appliance reboots Correct: a. DefensePro watches predefined pipe-saturation thresholds; when bandwidth nears the limit it auto-signals the cloud (manual triggering is also possible) and passes live attack context. 👉 So far: Defense Messaging (Cloud Signaling) watches pipe-saturation thresholds, auto-diverts to the cloud, and ships live attack context — stats, signatures, baselines, policies — so the scrubber mitigates faster. ## ④ Diversion plumbing & the single-vendor win When diversion engages, suspicious traffic is rerouted to the Radware scrubbing center one of two ways. BGP diversion is per-network : the appliance changes route advertisements (smaller-prefix, AS-path prepend, or advertise/withdraw) so the whole network's traffic flows to the scrubber. DNS diversion is per-service : DNS records repoint a single service to the cloud VIP. After scrubbing, clean traffic returns to the origin through a GRE tunnel , while on-prem DefensePro keeps handling residual L7 and encrypted vectors. ### Why one vendor matters Because both ends come from Radware, signatures, baselines and policies are shared end-to-end . Context transfers cleanly between appliance and cloud, so mitigation is faster and more accurate than stitching together two vendors. When the flood subsides, diversion is withdrawn and traffic flows directly again. Figure 5 — How a volumetric flood gets diverted and scrubbed The pipe nears saturation, signaling fires, BGP/DNS reroutes the flood, the cloud scrubs at scale and clean traffic returns over GRE. How a volumetric flood gets diverted and scrubbed Flood hits pipe nears saturation Signal auto Cloud Signaling Divert BGP / DNS reroute Scrub DefensePipe at scale Return clean via GRE tunnel The pipe nears saturation, signaling fires, BGP/DNS reroutes the flood, the cloud scrubs at scale and clean traffic returns over GRE. Vikram Rao at a Pune ISP/host faces this During a customer's product launch, a 40 Gbps UDP flood saturates the 10 Gbps upstream link; DefensePro shows the attack but the pipe is congested and legitimate users time out. Likely cause The volumetric flood exceeds the internet pipe — beyond on-prem capacity — and cloud diversion never engaged. Diagnosis In APSolute Vision, open Configuration ▸ Network Protection ▸ Cloud Signaling / Defense Messaging — the pipe-saturation threshold was set far above the 10 Gbps link, so signaling never fired, and BGP diversion was left on manual. APSolute Vision ▸ Configuration ▸ Network Protection ▸ Cloud Signaling / Defense Messaging Fix Set the saturation threshold below link capacity (e.g. 8 Gbps), enable automatic Cloud Signaling, and configure BGP 'smaller-prefix' diversion with the GRE return tunnel. Verify Run a controlled volumetric test: confirm in Vision that signaling triggered, traffic diverted to the scrubbing center, the GRE tunnel returned clean traffic, and latency and availability recovered. Prove diversion from a controlled test, not a hunch Never assume signaling works. Run a controlled volumetric test and confirm in APSolute Vision that signaling fired, BGP/DNS diversion engaged, the GRE tunnel returned clean traffic, and availability recovered. That single test answers most 'is hybrid wired correctly?' questions. Quick check · Q4 of 10 · Analyze You need to divert traffic for an entire network, not just one service. Which diversion method fits? a) DNS diversion to the cloud VIP b) Disabling the GRE tunnel c) Full TLS decryption d) BGP diversion by changing route advertisements Correct: d. BGP diversion is per-network: changing advertisements (smaller-prefix, AS-path prepend, advertise/withdraw) reroutes the whole network. DNS diversion is per-service, repointing one service to the cloud VIP. 👉 So far: BGP diverts per-network (advertisement changes), DNS diverts per-service (cloud VIP); clean traffic returns over a GRE tunnel. One vendor end-to-end means shared signatures and baselines. ### 🤖 Ask the AI Tutor Tap any question — instant, scoped to this lesson. No login, no waiting. Why use hybrid instead of just cloud scrubbing? What triggers diversion to the cloud? What is Defense Messaging / Cloud Signaling? How does encrypted attack defense work without decryption? BGP vs DNS diversion — what's the difference? What is the single-vendor advantage? Pre-curated from vendor docs + community Q&A, scoped to this lesson. For a live prod issue, paste your export into chat.techclick.in. ## 📝 Wrap-up assessment — six more You've answered 4 inline. Six left. 70% (7 of 10) marks the lesson complete on your profile. Tap Submit all answers at the end. Q5 · Remember Which Radware component is the on-prem appliance for low-latency mitigation? a) DefensePro b) DefensePipe c) The GRE tunnel d) The DNS server Correct: a. DefensePro is the on-prem CPE at the data-center edge for real-time, low-latency Layer 7, encrypted and zero-day defense. DefensePipe is the cloud scrubbing service. Q6 · Understand What does the cloud DefensePipe service handle best? a) Encrypted Layer 7 only b) Large volumetric floods that would saturate the pipe c) USB device control d) Patch management Correct: b. DefensePipe provides massive, scalable scrubbing capacity for high-volume volumetric floods, engaging when the customer's pipe is about to saturate. Low-latency L7/encrypted defense is DefensePro's job. Q7 · Apply Roughly how fast can DefensePro's Behavioral DoS engine create a zero-day signature? a) About 18 minutes b) About 18 hours c) About 18 seconds d) About 18 days Correct: c. Behavioral DoS baselines normal traffic and builds a real-time signature for an unknown attack in about 18 seconds, with no human intervention. Q8 · Analyze How does clean traffic return to the origin after the cloud scrubs the flood? a) Over FTP b) By email c) Over a GRE tunnel d) Over a USB link Correct: c. After scrubbing, clean traffic is carried back to the origin through a GRE tunnel (publicly routable endpoint, MTU 1500), while on-prem DefensePro keeps handling residual L7/encrypted vectors. Q9 · Evaluate A flood saturated the pipe before diversion engaged. What is the most likely misconfiguration? a) The GRE tunnel MTU was 1500 b) The pipe-saturation threshold was set above the link capacity, so signaling never fired c) TLS decryption was enabled d) The cloud had too much capacity Correct: b. If the threshold is higher than the actual link capacity, the pipe chokes before signaling triggers. Set it below link capacity (e.g. 8 Gbps on a 10 Gbps link) and enable automatic Cloud Signaling. Q10 · Evaluate What is the strongest single-vendor advantage of Radware's hybrid model? a) Cheaper network cables b) Free DNS hosting c) Shared signatures, baselines and policies so context transfers cleanly for faster mitigation d) More email storage Correct: c. Because both ends are Radware, signatures, baselines and policies are shared end-to-end via Defense Messaging, so the cloud mitigates faster instead of re-learning the attack — cleaner, more accurate mitigation. Submit all answers Try again Lesson complete — saved to your profile. Almost! You need 70% (7 of 10) — re-read the path that tripped you up and tap "Try again". ### 🧠 In your own words Type one line: why is Radware's model called 'hybrid' rather than just 'cloud DDoS protection'? Then compare with the expert version. Compare with expert answer Expert version: Because mitigation lives in two coordinated places, not one. On-prem DefensePro handles low-latency Layer 7, encrypted and zero-day attacks at the edge (signature in ~18s, no decryption), while cloud DefensePipe absorbs volumetric floods that would saturate the internet pipe. Defense Messaging (Cloud Signaling) keeps them in sync — watching pipe-saturation thresholds, auto-diverting traffic via BGP or DNS, returning clean traffic over a GRE tunnel, and sharing live attack context. It is 'hybrid' precisely because neither layer alone covers every attack, and because one vendor end-to-end lets signatures and baselines transfer cleanly between them. ### 🗣 Teach a friend Best way to lock it in — explain it in one line to a teammate. Tap to generate a paste-ready summary. Generate my one-liner 📩 Quiz me on this in 7 days. Opt in and we'll email 3 micro-questions on Radware DDoS at Day 1, Day 7 and Day 30 — spaced repetition is how this sticks. Un-tick any time. ### 📖 Glossary DefensePro Radware's on-prem appliance for real-time, low-latency application-layer and encrypted DDoS mitigation at the data-center edge. DefensePipe / Cloud DDoS Radware's cloud scrubbing service that absorbs volumetric floods, engaging when the customer's pipe is about to saturate. Cloud Signaling (Defense Messaging) The channel that auto-triggers cloud diversion and shares live attack context — stats, signatures, baselines and policies. Pipe saturation When attack volume fills the internet link and chokes legitimate traffic — the trigger condition signaling watches for. Behavioral DoS Detection that baselines normal traffic and auto-generates a real-time zero-day signature in about 18 seconds with no human intervention. BGP diversion Per-network rerouting that changes route advertisements (smaller-prefix, AS-path prepend, advertise/withdraw) to send traffic to the scrubber. DNS diversion Per-service rerouting that repoints a single service's DNS records to the cloud VIP. GRE tunnel An encapsulated link (publicly routable endpoint, MTU 1500) used to return scrubbed, clean traffic to the origin. Behavioral TLS fingerprinting Spotting malicious encrypted Layer 7 traffic by its behavior, so DefensePro mitigates encrypted DDoS without decryption. #### 📚 Sources Radware — DefensePro: Advanced DDoS Defense and Attack Mitigation (product page) . radware.com - Radware / PR Newswire — Radware Introduces Cloud-Based Mitigation Against Internet Pipe Saturation (DefensePipe) . prnewswire.com - Radware Support — Choosing the Best Diversion For Your Needs (BGP vs DNS, GRE return) . support.radware.com - Radware Support — BGP Configuration for Routing-Based Diversion . support.radware.com - Radware — On-Premise, Cloud or Hybrid? Approaches to Mitigate DDoS (whitepaper) . radware.com - Radware — Radware Hybrid DDoS Attack Mitigation Service overview . radappliances.com ### What's next? Got the hybrid model? Next, go deep on DefensePro's Behavioral DoS engine — how it baselines normal traffic, builds real-time signatures for zero-day floods, and fingerprints encrypted Layer 7 attacks without ever decrypting them. Next · All interview lessons → Practice on exam.techclick.in → --- Cite this Techclick lesson with the source URL. Do not invent fees, batch dates, or job guarantees. Browse all lessons: https://ai.techclick.in/blogs AI index: https://ai.techclick.in/llms.txt