SYN attack is a kind of DOS attack. It takes advantage of TCP protocol defects and consumes CPU and memory resources by sending a large number of semi-connection requests. SYN attacks can not only affect hosts, but also harm network systems such as routers and firewalls. In fact, SYN attacks can be implemented as long as these systems turn on TCP services no matter what systems are targeted. As can be seen from the above figure, the server receives the connection request (syn=j), adds this information to the unconnected queue, and sends the request packet to the client (syn=k, ack=j+1), then enters the SYN_RECV state. When the server does not receive an acknowledgement packet from the client, it retransmits the request packet and does not delete this entry from the non-connection queue until the timeout. With IP spoofing, SYN attacks can achieve good results, Typically, clients forge a large number of non-existent IP addresses in a short period of time, SYN packets are continuously sent to the server, and the server replies to the confirmation packets and waits for the confirmation of the customer. Since the source address does not exist, the server needs to continuously resend until it timeout. These forged SYN packets will occupy the unconnected queue for a long time, normal SYN requests will be discarded, the target system will run slowly, and in serious cases, the network will be blocked or even the system will be paralyzed.
《甜蜜的秘密》讲述了开朗坚强的妈妈和对外冷酷的挑剔男人之间互相抚平伤口，领悟到真正爱情和亲情。该剧细腻剖析了想要工作、家庭并重的职业女性的生活点滴。
Review the correct practice method:
巴黎，法国，1899年。塞纳河里发现了一具无名女子的尸体。这项调查将促使一位雄心勃勃的年轻检察官发现一项重大国家机密。
这事我得跟皇上说清楚……板栗急忙阻止道：随你。
故事发生在巴尔的摩的毒品集中地，毒品商Barksdale被卷入一宗谋杀案中，. Jimmy受命组织一个由杀人犯和贩毒者组成的团队，来对付毒品头子阿文。阿文有一群忠心耿耿的拥护者，而且眼线众多。得到密报后，他们一方面装作与政府合作，另一方面暗中与对手奥尔玛较劲，奥尔玛曾经抢夺过阿文的毒品，并转手倒卖。调查监督员Daniels此时正面临因受贿被调查的麻烦。
遵旨。
顾菲是某酒店的一位领班，身上有着中国女人特有的善良与坚韧。
是一个全新的故事，跟第二集以短篇合集的方式并不同，在第三集的故事当中，Cinderella 那位坏心的后母居然发现了魔法的秘密，便去偷了神仙教母的魔杖，用魔法让时光倒流，让仙度瑞拉如今的幸福化為泡影，恢復当初灰姑娘时期受到虐待的生活。
第10季将引入另一条长期故事线——意即引入一个和第八季「复制者」（The Replicator）类似的「未知对象」（unsub）。詹妮弗·洛芙·休伊特从本季开始扮演FBI探员Kate Callahan，她将填补Blake离去后留下的空白。行动分析组在调查一个连环杀人案，这个时候，一位新的探员Kate Callahan加入团队中。
召唤被封印的恶魔维尔梅。她自古以来就是令人害怕的“恶魔”，拥有带来灾难的强大力量。
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乾隆面对李卫是很矛盾的，既不喜欢他又不能不用，当最讨厌李卫的时候，恰恰李卫办出了漂亮的事；当想重用李卫的时候，李卫却自己往后退，一再递上辞官摺子，令乾隆气也不能恨也不是。李卫面对乾隆，也是无可奈何，由于有一层君臣的名分，大
Therefore, arrow rain is used in conjunction with explosive arrows. This idea comes from Ba You, thank you very much.
Console.log (b.getName ()); //aa
本作揭晓了诸多谜团，亡的神秘身份，千骑系统的诞生过程，不破谏大脑中的芯片从何而来……
For the first time, Mary started crying from the middle of the game with "boundless fear" in her heart. She was most afraid of dark passages and simulated incinerators and resisted fear by reciting "Heart Sutra".
抗战中期，三个性格迥异的亲兄弟离散多年后重聚北平，三人命运际遇迥然不同，最终却殊途同归，并肩走上了抗日救国的光荣之路。老大田大林原是国军神枪手，部队全军覆没后他一人苟活来到北平，与兄弟重逢后成为一个机械师，而背地里他却是一名让敌人闻风丧胆的抗日锄奸团杀手；老二田二林本是北平城一名普通的厨师，却阴差阳错、冒名顶替成了一名日本料理店的大厨，顶着汉奸骂名的他，实际上是地下党；老三田三林与母亲从山东老家来北平城投奔二林，想出人头地的三林误入黑帮，却凭着胆大心细，一路混成了有头有脸的黑老大，却发现自己不过是日本人眼里的一条狗。三兄弟曾经互相不谅解。但面对共同的敌人，最终在这场血与火的考验中，三兄弟团结起来共同抗日，演绎了一出交织着国仇与家恨、民族大义与兄弟亲情、剑拔弩张与爱恨纠结的烽火传奇。
