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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.Ctrl + P: Print current graphic中国奇书《推背图》是唐初李淳风与袁天罡合撰，预言历代变革之事，准确灵验。唐太宗翻看此书后，大为赞赏，重赏李淳风，袁天罡因妒忌李淳风夺其功，怀恨在心。太宗死后，两人更将《推背图》图、文分家，两家成为世仇。而《推背图》从此绝迹民间。数百年后，两家后人阴差阳错结成夫妇……