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.
If RSA series of public key cryptographic algorithms are used, the server will consume more resources than the client.
教训他的事，交给我就好了，保证他今后服服帖帖。
《校长》：60年代，社会清贫，但求学者众。一位执笔忘饭的校长与善良淡雅的王老师让一座天台学校成为童年岁月里最温暖的家。
The simple understanding is that photometry is in charge of the light and shade distribution of the whole photo, with the central focus on photometry and uniform light and shade of the photo. The spot metering is more suitable for shooting the actors on the stage, that is, taking the actors as metering spots, and the photos taken are based on the brightness of the actors, rather than the shady scenes around the actors.
丛容被妈妈安排去国外念经济学，定居国外是丛母对丛容的最终要求。但一心想当律师的丛客，却自学悄悄潜回国内考取证书，并瞒着妈妈回国就业。没想到实习期遇到的第一个难关就是温少 卿!为了能够顺而度过实习期，丛容与温少卿“斗智斗薦”。命运的红绳将两人越绑越紧,温少卿不仅是丛容的房东，还是对门邻居。当一切真相大白，丛容才发觉自己早已爱上温少唧。
杨白(温峥嵘饰)是市京剧团有名的大青衣，周自横(张国强饰)的母亲嫌她是戏子，以死相逼阻止儿子娶她为妻。周自横无奈只能顺从母意，但内心一直深爱着对方；而杨白则心灰意冷，在追求者中用抓阄的方式选择丈夫，嫁给了夏博文(陈创饰)，并生了女儿小白(宋轶饰)……
七个小矮人的木屋闯来一位迷路的小女孩汉娜，她坚信失踪的爸爸还活着，所以仅凭一支神鸟羽毛线索四处寻找爸爸。白雪公主和小矮人被她感动决定要帮助她，于是她们驾驶热气球飞向鸟岛，途中遭遇巨鹰和风暴袭击，险象环生。掉下森林后又经历了魔法屋的重重考验，她们历经千辛万苦见到神鸟，知道了爸爸失踪原因跟王后最近得到的一件世界上最美丽的礼服有关。随后救人路上她们落入王后的圈套全部被抓，危机关头，王子赶来同白雪公主和小矮人一起帮助解救爸爸，最后父女团圆。
柳重言以辩论律法见长，后来逐渐介入侦探。在查案过程中，引出了一串串错综复杂、曲折迷离的故事...... 案中有案，太傅惨遭灭门之灾；歪打正着，柳重言成……
板栗见几位老人中气十足，放下心来，陪着他们说笑一会，又去了女眷那边。
1860 年，英法联军向布防在张家湾的清军开战。直隶绿营总兵郑元培出征抗敌，血战之后身负重伤。张仰山和店里伙计林满江意外发现了奄奄一息的郑元培，在生死关头，张仰山化开一块比金子还贵的古墨为郑元培止血疗伤，保住了他的性命。郑元培伤愈之后欲重新回到战场作战，临行前为报张掌柜救命之恩，留书赠画，将怀素的《西陵圣母帖》和宋徽宗赵佶的《柳鹆图》送给张仰山。这两幅令多少大家皇族梦寐以求的稀世珍宝就这样存于了张家，张仰山将它们珍藏多年，不曾示人。此后，这书画不仅结成赵张两家几代的情谊，也带出了张氏子孙一段曲折动人的家族往事。
Writer Debbie Horsfield has confirmed that her final series will follow the lives of the Poldarks and the Warleggans in the ten-year period between the events of books seven and book eight The Stranger from the Sea.It is a new century and with it comes the promise of a hopeful future, but the past casts a long shadow over Cornwall. Following the death of Elizabeth, Ross Poldark (Aidan Turner) resolves to put Westminster behind him and spend more time with the people he loves. However, when an old friend emerges with a plea for help, Ross is compelled to challenge the establishment again. As the Enyses (Luke Norris and Gabriella Wilde) rally to join the cause, Demelza (Eleanor Tomlinson) must contend with dangers close to home, while George (Jack Farthing) courts corrupt powers whose influence spans the Empire.
冷漠挑剔，事事要求完美，从19岁时就开始代替恶病缠身的父亲代理听政。洪罗恩（金裕贞饰）从懂事开始就女扮男装，因为妈妈告诉她只有那样才能活下去，罗恩像男子一样长大，承担起了家庭的重担，每天靠着为人们解决男女间的烦心事，拼命的赚钱。李英出宫去会见让傲慢妹妹动心的男人，却遇到了冒名顶替而来的洪罗恩，李英虽识破了罗恩的顶替身份，却也肯定了其才能，想要将其收归己用时被罗恩逃脱。洪罗恩为筹钱救活妹妹，答应了判内侍府事的入宫要求，在宫中再次见到了李英。不知李英世子身份的罗恩慌张不已，以为李英是因为喜欢男人而尾随进宫，而李英似乎并不打算将自己的真实身份告诉她。
影片讲述一名职业杀手执行任务时失败身亡，被复活后仅能生存24小时，在国际女刑警的影响下重设任务目标，自我救赎的故事。影片由莱恩·史莫兹掌镜，科林·吉布森担任视觉指导。
新年里大家都吃好喝好，一切顺心，然后便是顺便求一下订阅……(未完待续。
Pacific Battlefield: 1.38 million Japanese troops, 120,000 US troops and 30,000 British troops died, with a death ratio of about 9.2: 1
尉缭道：如此甚好，那大王安排就是了，关中的人手忠诚没有任何问题，着手安排为我所用就是了。
大导演李翰祥揉合野史，正史与个人考据之创作，顺手拈来，皆可风趣解颐。民间传说之美食「金镶白玉牌，红嘴绿鹦哥」的由来，叫你忍唆不禁。
(1) When two ships are affected by wind on different sides, the ship affected by wind on port side shall give way to other ships;
