If an attacker sends a large number of SYN requests with fake source addresses, the server side will consume a lot of resources to handle this semi-connection, and saving traversal will consume a lot of CPU time and memory, not to mention retrying SYN + ACK on IP in this list. TCP is a reliable protocol, and messages will be retransmitted at this time. The default number of retries is 5. The interval time of retries is doubled from 1s to 1s + 2s + 4s + 8s + 16s = 31s respectively. After the fifth time is sent out, it will take 32s to know that the fifth time has timed out, so the total is 31 + 32=63s.
4. Learn from words
CAD shortcut key refers to the use of shortcut key instead of mouse in CAD software operation for the convenience of users. You can use keyboard shortcuts to issue commands to complete operations such as drawing, modifying and saving. These command keys are CAD shortcuts.
当整个荥阳都落入越军手中的时候，任何的负隅顽抗都没有意义，曹参现在就在做这样的事情。
The User class is as follows:
该片主要讲述了小镇理发店老板老马的女儿小满在大学毕业之际，带着几个大学同学来到小镇上，却在理发店内遭遇了一系列离奇事件的惊悚故事。老马开着一个理发店。女儿小满要毕业了，带着几个大学同学来到老马家，却在理发店内遭遇了一系列离奇的故事……
Track and Field
5. The ship shall make a long sound when approaching the elbow or section of the waterway or channel where other ships may be shielded by intermediary obstacles. The sound signal shall be answered by any incoming ship that may hear it on the other side of the elbow or behind the intermediate obstacle with a long sound.
凭借钟隐先生的实力，或许能够暗中刺杀，风险大而且不易成功，而且单单是杀了，是不是太便宜他们呢？钟隐点头道：不错，于他们而言，最好的报复便是毁去他们的基业，让他们尝到失败的滋味。
《富翁的诞生》围绕一群富二代展开故事。讲述了把继承家业视为最大人生理想的大财团女继承人与深信自己是富豪的男人共同奋斗而走向成功的故事。男主人公池贤宇是某大型财团老板的私生子，他努力工作最终成为一代富豪，而李宝英则饰演一个与众不同的大财团女继承人，自己的实力来实现梦想，打破人们对女性偏见的现代职场女性。五成集团的富豪决定把所有财产交给自己的女儿李信美（李宝英饰）继承，但交出的条件是她必须改过从小的习惯，要像富豪一样生活。李信美虽然含着金钥匙出生，但却是个“生计型”有钱人，总是爱到超市把试吃的产品当晚餐，然后到自动售卖机买一小杯咖啡喝就很满足的她，化妆品也必须大减价才肯买，还一分一毫都算得清清楚楚，天下间最讨厌的东西就是浪费。过着不一样的“富人”生活却自得其乐。看不惯的父亲要求她一心一意为公司做出成绩，证明她的能力。有帅气外表和自信感的事业家秋云硕（南宫民饰），他在财阀阶层受到了各种蔑视和侮辱，内心产生了愤怒和报复心。他想通过获得财阀继承人李信美的心来重振集团，云锡为讨李信美的芳心将散发多种
关东门，一个结庐百年的隐世门派，一场武林纷争，险些绝迹武林。某日，精明老头六世祖李世真与门派首徒李逍陆一路逃亡行至逍遥镇聚贤街，意外帮助与女儿相依为命的酒馆老板娘徐二娘化解了一场江湖危机，徐二娘借机与二位豪杰携手合作，阴差阳错之下，昔日酒馆变成了武馆，又因连遭踢馆险些灭门，武馆又变成了医馆。在二位师弟令人“智熄”的操作下，本该热热闹闹的开业庆典引发了一场塌天大祸，关东门人成为武林公敌。在开设医馆的过程中，关东门人结交了各路英雄豪杰和武林奇葩，凭借半吊子的医疗方法歪打正着的救治了一个又一个江湖怪客，上演了一出又一出滑稽搞笑的武林闹剧。在鸡飞狗跳，啼笑皆非的搞笑日常里，一个深深隐藏的惊天秘密也逐渐浮出水面。
所以才对这方面的事情有些了解，若非如此根本察觉不到这些情况。
People have studied SYN attack prevention technology earlier. To sum up, there are mainly two categories, one is through firewall, router and other filter gateway protection, the other is through strengthening TCP/IP protocol stack protection. However, it must be clear that SYN attacks cannot be completely prevented. What we have done is to reduce the harm of SYN attacks as much as possible unless TCP protocol is redesigned.
Iterator mode: Pay attention to encapsulating changes in specific fields, support changes in collections, shield complex internal structures of collections objects, and provide transparent traversal of collections by client programs.
The basic idea is the same as the adapter pattern of the class, except that the Adapter class is modified. This time, instead of inheriting the Source class, an instance of the Source class is held to solve the compatibility problem. Look at the picture:
西门吹雪﹝黄元申﹞自目睹其夫人孙秀青﹝黄杏秀﹞与陆小凤﹝刘松仁﹞同在一床以后，便下决心杀掉凤。雪追踪了廿一日，终把凤追上，凤不敌雪，跃身逃去。为避开雪，凤被逼走进「能入不能出」之幽灵山庄，幸得庄主老刀把子﹝关海山﹞收留，并以客人礼仪待之。表面上，子对凤甚为器重，但实际上只是利用凤去助他完成独霸武林之奸计。 另一边厢，凤之好友花满楼﹝黄允财﹞及武林高手老实和尚﹝卢海鹏﹞、司空摘星﹝廖伟雄﹞皆不信凤会做出淫人妻之事，惜他们并非雪之对手，于是向武功非凡的玉道人﹝关海山﹞求助，玉允之，并向雪承诺详查此事。 谁料玉即是子，且他更即将接任武当掌门之位，被武林中人尊为盟主。凤知悉后，急与花、星找雪相助，雪答允其妻为武林出力，遂抛下私人恩怨，与凤等人同往武当，与武林首恶展开一场血战……
If we want to delete rule 3 in the above figure, we can use the following command.
Don't say it was Lin Huiyin, but Lin Ruhai, the officials who returned to Beijing to report on their work and waited for inquiries from above, were shocked.
Western Crazy: For every 100 points of Crazy, [Skill Damage] +100%; When using sword, another +30%.
