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If an attack is detected, the management center will start a cleaning scheme to pull the mixed traffic of attack traffic and normal traffic through BGP, CDN, etc. Pull the mixed flow to the flow cleaning center for cleaning. The problem in the process of traffic cleaning is that the current DDOS attacks present a mixed attack state with multiple attack methods coexisting. In this case, how to efficiently detect attacks is the main problem currently facing. After consulting numerous data, Huawei's "seven-layer cleaning plan" is found to be very enlightening. The scheme comprehensively analyzes data packets for mixed traffic through seven layers of defense measures such as static filtering, abnormal message filtering, scanning and snooping message filtering, source legitimacy authentication, session-based prevention, feature identification filtering and traffic shaping, so as to detect attack traffic to the greatest extent. The framework of Huawei's "seven-layer cleaning scheme" is shown in Figure 2. After the traffic is cleaned, the attack traffic is discarded, and the normal traffic is injected back into the network through MPLS, GRE tunnel technology, etc.秦淼大惊：这是第一步？还有第二步？板栗点头道：当然。一口吐沫喷到杨长帆脸上。　　至于这部歌舞片的男主角，聂文邀请了来自香港的当红男星林见东，聂文给出的片酬并不高，但林见东却一口就答应了出演，为此经纪人一路都在埋怨他。　　故事聚焦新时代女性成长，通过讲述家境不同，性格不同，但从校园时期就拥有少女情谊的蒋南孙与朱锁锁，一同经历亲情、爱情、事业、婚姻种种考验，仍旧互相扶持，同甘共苦的故事，深度呈现现代女性生活现状与成长困境，深化对现实的思考和感悟。取经归来后的唐僧师徒四人失去了法力，在现代社会变成了小人物浑噩度日。一个偶然的机会，孙悟空得知唐僧准备卖掉西天取经路上用的紫金钵盂，师徒之间尘封多年的情义再次复燃。为了保护钵盂不被牛魔王、金大鹏为首的一伙坏人抢走，唐僧师徒四人再度聚首，体内的洪荒之力再次被唤醒，同邪恶势之间展开了斗争……Daemon ToolsLite is a very good virtual CD-ROM tool, which supports win9x/win2k, ps and encrypted CD. It can be used without starting after installation. It is an advanced software that simulates backup and merges the protected disks. It can back up the software protected by safeDisc and open the mirror files of cue, iso and ccd, etc. (more formats will be supported in the future)