随机数据包标记（PPM）是对拒绝服务攻击进行IP回溯的一种实用而有效的方法。
Probabilistic packet marking (PPM) is a practical and effective method for IP traceback of denial-of-service(DoS) attack.
确保服务的实现依赖于在边界路由器执行的数据包标记策略和在核心路由器执行的队列管理策略。
The Assured Services architecture relies on packet marking mechanism at the edge router, and queue management mechanism at the core router.
其主要思想就是依据数据包的到达速率自适应地调整标记概率。
The main idea of it is adaptively adjust the marking probability of BLUE according to the arriving rate of packets.
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