Infrastructure2026-05-17
DDoS (Distributed Denial of Service)
Also known as: DDoS / DDoS攻撃 / 分散型サービス拒否攻撃
An attack that overwhelms a target server with massive traffic from multiple compromised hosts to cause service disruption. Mitigation services like Cloudflare and AWS Shield absorb and filter the traffic to maintain availability.
Overview
DDoS attacks divide into bandwidth exhaustion (L3/L4) and application-layer (L7) types. Cloudflare absorbs attack traffic across its global network and passes only legitimate traffic to the origin.
Multi-Layer Defense
Effective DDoS defense combines DDoS mitigation, WAF, rate limiting, and IP reputation blocklists in multiple layers. See zero-trust security guide for a web service security framework.
Related Columns
Network & Infrastructure
Zero Trust Security Implementation Guide: Moving Beyond VPN-Dependent Security in 2026
A comprehensive guide to transitioning from traditional VPN-dependent security to zero trust architecture. Covers SASE, SSE, and ZTNA fundamentals, identity-based access control, micro-segmentation strategies, step-by-step implementation for SMBs, cost analysis, and leading solutions including Zscaler and Cloudflare Access. Learn how to build a modern security posture that protects your distributed workforce while maintaining compliance and operational efficiency.
Network
Enterprise Network Security: Essential Measures to Prevent Data Breaches
A comprehensive guide to enterprise network security measures. From firewalls and IDS/IPS to endpoint security and employee training, our Shinagawa-based IT security team covers the essential strategies.
Web Development
Complete Guide to Contact Form Spam Protection | 4-Layer Defense to Block Spam
Learn how to eliminate contact form spam with a 4-layer defense strategy combining honeypot fields, time-based detection, rate limiting, and CAPTCHA verification.
Related Terms
Feel free to contact us
Contact Us