基于Web的DoS攻击与防范策略研究

The Research on DoS Attacks and Countermeasure Based on Web

为了防范基于Web的DoS攻击,验证码技术得到了广泛应用。分析了Web上实施DoS攻击的基本原理,讨论了图片验证码的实现技术以及图片验证码的重要安全性指标——图片识别率问题。论证了运用基于验证码的表单提交技术,该技术能够有效地防范针对数据交互这一薄弱环节所实施的DoS攻击。最后对实现方法的进一步完善提出了建议。

To avoid DoS attacks based on Web, the identifying code technique is widely used. This paper analyzes the principle for carrying out DoS attacks on the Web, discusses the realization technique and important image identification rate for image checking-code. It is demonstrated that the technique, by sending the file information through form based on checking-code, can effectively guard against DoS attacks aiming at the weak data interaction. Finally, several other suggestions for the implementations are proposed.