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Suppose the attacker is in an "interconnected" network (e.g. An Autonomous system? System), whose ISP restricts the input and output filtering of the attacker's network traffic, will be able to prevent this spoofing attack-if this method can be deployed to the correct location by the organization. This defense method of traffic input and output filtering will restrict some legitimate communications, such as the mobile IP triangular routing operation mode, so it cannot be widely deployed. IP Security Protocol (IPsec) also provides an excellent way to resist spoofing packets, but this protocol cannot be used due to deployment restrictions. Since it is usually impossible for the server side to require the ISP of the link initiator to implement address filtering or require it to use IP security protocols, more complex solutions are needed to resist this spoofing attack disguised as multiple addresses, which will be discussed later.第二季审视毒品问题对城市贫民阶层的影响，尤其探讨了以码头工人为代表的蓝领阶层的生存困境，他们中有些人通过帮助走私集团运送毒品和其他违禁品讨生活。同时也讲述了Barksdale团伙于Avon入狱后是如何在Stringer Bell的领导下继续发展。一个相当有实力却患舞台恐惧症的主唱范思哲，一个有点娘的男贝斯手童子，一个很爷们的女鼓手四毛，一个假不正经的鬼才队长亦丰，四人怀着相当拉风的成为摇滚明星的梦想组成了机车乐队。不料却因为有主唱每次登上舞台唱不出来的现实，让机车乐队扬名的愿望一次次破灭，并沦为笑柄。这件事让乐队十分困扰。直到子丰的表妹周雪彤作为交换生从香港来到他们学校，这个精于舞蹈和小提琴的绩优生，用自己的感悟教会了主唱范思哲在舞台上如何发挥。相互欣赏的两人情愫暗生。但碍于与范思哲青梅竹的“女友”惠子的自毁强制性占有，使得周雪彤与范思哲的关系只能到此为止。但周雪彤的到来终究是如她神秘的人一样，悄悄改变了这故事发生在雍正皇帝（陈建斌 饰）在位期间，盛大的皇宫选秀仪式上，本不愿入宫的大理寺少卿甄远道长女甄嬛（孙俪 饰），因某种原因被皇帝一眼相中，从而和沈眉庄（斓曦 饰）、安陵容（陶昕然 饰）等两个初相识便情投意合的好姐们进入了暗流涌动的深宫内院。后宫之中，看似娴熟温良的皇后（蔡少芬 饰）滴水不漏，城府颇深；众妃之首的华妃（蒋欣 饰）则仰仗哥哥年羹尧的重臣地位和皇帝的宠幸而飞扬跋扈，对异己肆意打击倾轧。身处钩心斗角、以血洗血的残酷乱局之中，甄嬛和姐妹们都无法独善其身，她们或主动、或被动地卷入了裹挟着爱情、友情、金钱、权力的残酷战场…………————感谢书友【cxy无奈】的慷慨打赏。As long as there is a definite goal, doing anything at any time will not hinder thinking and research, or even help thinking and research. They think they have wasted time, but in fact they have not wasted it.她虽然说的轻描淡写，但尹旭知道肯定不会这样的简单。