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When the SYN gateway receives the SYN packet from the client, it directly forwards it to the server. After receiving the SYN/ACK packet from the server, the SYN gateway forwards the packet to the client and sends the ACK confirmation packet to the server in the name of the client. At this time, the server enters the connected state from the semi-connected state. When the client confirms the arrival of the packet, it forwards if there is data, otherwise it discards it. In fact, the server has a connection queue in addition to maintaining the semi-connection queue. If SYN attack occurs, the number of connection queues will increase, but the number of connections that the general server can withstand is much larger than the number of semi-connections, so this method can effectively reduce the attack on the server.故事发生在九十年代北京一座古老的旗人宅院。 改革的大潮席卷大都市的同时，也将这座小巷深处的小院中的四户人家卷进了激流之中。 命运的诱惑和爱心的聚散勾勒出了小小四合院儿里一件件悲欢离合的故事；勾勒出了一个个令人难以忘怀的剧中的人物形象……[Highlights]难道这次我们都要死在这里？看到任我行、向问天频频受伤，任盈盈也是心生绝望。冒顿接到消息，并未觉得有什么奇怪的，一切似乎都合情合理。石碑之后，不再是曲折的山路，而是一条平坦犹如镜子一般的大道。孙海山是‘柳杨拳’的传人。一辈子最大愿望就是把武馆发扬光大，但他古板的教学方式根本招不到学员。而把武馆当生意做的师弟白宗元却经营的有声有色，桃李满天下。为了争到那块代表正宗的百年老匾与孙海山展开了明夺暗抢，甚至不惜利用儿子白云峰对孙铁铮的感情，结果弄巧成拙，反而促成了儿子与离婚妈妈小丽的婚事，让他后悔不迭。孙铁铮三十了还没有找到对象。妈妈彭红霞把这一切的原罪归于孙海山，为此两人吵吵闹闹几十年，一句话不合离了婚。林一浩的到来，给传统的武馆带来了生机，也被柳杨拳博大精深的奥妙拳术深深打动，中华武魂精神成就了他和孙铁铮的爱情，也让孙海山和彭红霞重新走到了一起。