拒绝服务攻击由于其高发性、大危害、难防范而成为因特网上的一大难题.研究人员为此提出了各种各样的对策,其中概率包标记具有较大的潜力.然而,现有的标记方案都存在各种各样的缺点.提出了一个新的标记方案,与其他标记方法相比,该方案具有反映灵敏、误报率低和计算量小的优点.此外,该方法还限制了攻击者伪造追踪信息的能力. Because of its high incidence, great harm and hard to prevent, denial-of-service attacks have become a major problem on the Internet. Researchers have proposed a variety of countermeasures for this purpose, of which the probability of packet marking has great potential. However, There are a variety of shortcomings of the labeling scheme.A new labeling scheme is proposed, which has the advantages of sensitivity, low false alarm rate and small computation compared with other labeling methods.Moreover, this method also limits Attacker forges the ability to track information.