Blockchain & Cryptocurrency Glossary

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DOS Network

1 min read
Pronunciation
[dee-oh-es net-wurk]
Analogy
Like a network of fire stations positioned around a city to quickly respond and put out fires before they spread.
Definition
A decentralized network providing distributed denial‑of‑service (DDoS) mitigation by routing traffic through a mesh of nodes that filter and absorb attack traffic.
Key Points Intro
DOS networks protect applications by distributing and scrubbing incoming traffic.
Key Points

Traffic filtering: Nodes detect and drop malicious packets.

Load distribution: Balances requests across many entry points.

Proof‑of‑work: Some require client puzzles to throttle bots.

Monitoring: Real‑time analytics on traffic patterns.

Example
A blockchain API endpoint sits behind a DOS network that requires proof‑of‑work stamps on incoming requests, mitigating bot floods.
Technical Deep Dive
Edge nodes run challenge‑response (Hashcash) to validate clients, use IP reputation lists, and apply rate‑limiting via token buckets. Clean traffic forwarded through encrypted tunnels.
Security Warning
Malicious nodes in the network can drop or spy on traffic; enforce node attestation and encryption.
Caveat
Network overhead and latency may increase for legitimate users.
Related Terms
Load Balancer
Rate Limiting

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