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Attackers can use dig query and EDNS0 to carry out efficient DNS amplification attacks. Attackers want the widely existing open DNS parser to send dig query commands, set the udp message size in the opt rr field to a large value, and make the requested source ip address not the target ip address.SYN flooding attacks can attack with fewer packets than ordinary brute-force DoS attacks that only send a large number of packets to the target network. However, this requires some understanding of the server's operating system, such as how much backlog queue space it allocates and how long it will keep the TCB in the SYN-RECIEVED state before timeout and discarding the TCB. For example, an attacker can send a certain number of SYN packets that are exactly the size of the backlog queue, and their cycles are just the time when the TCB is recycled, thus making the server permanently unavailable.丁柠是一个母胎单身，直到她遇到了萧烨。命中注定的相遇，也带来了不平凡的浩劫……时间一直停留在了他们相遇的那一天，这也恰巧给了丁柠去了解和“攻略”萧烨的机会，直到时间的循环打破。青莲又跑回家，于是连郑家也派人来了。Liaoning Province《重来吧魔王大人第二季》制作组在末尾留下了伏笔也挑明了待续，说明出第二季的概率还是很高的，属于疯狂暗示了，值得期待。1