If the connection initiator is legal, the firewall/proxy will receive the ACK, then establish a connection between itself and the server and disguise the address of the connection initiator. The firewall/proxy separates the two sides of the connection. This segmentation can resist SYN flooding attacks because the server has not accepted SYN from the attacker at all. As long as the firewall/agent implements some TCP-based defense policies, such as SYN? Cookies or SYN? Cache, he can protect all servers behind him from SYN flooding attacks.
3. I will not complain about the recommendation of books on in-depth learning. There are too many slots to spit. Save some effort and recommend books that are really suitable for novice readers at different stages.
项羽立即跑上去将虞姬揽入怀中，柔声道：虞姬，让你受委屈了。
职场小白领莫西西应聘唐氏集团总经理助理，却误打误撞发现了总经理唐小山的真实身份——驱魔人。 莫西西逐渐感受到唐小山的善良和正义，唐小山也帮助莫西西拾起自尊，做一个坚强的女孩，两个人逐渐成为了知心朋友。 变异妖兽的首领叫做魔爵，他不择手段对付唐小山，将他打成重伤。 在莫西西的帮助下，唐小山不但复元，而且武功更进一步。唐小山挺剑再战江湖，一鼓作气除掉魔爵。 大战过后，唐小山和莫西西敞开心扉，走到了一起。俩人携手，为正义而战。
As for us, through a shortcut of knowledge, just a few days of experiences came to teach us these facts, that multiple species of plants can be used as dyes and that plants carry most of the pigments. However, most of these pigments are fragile and break down easy over time, or once the fabric is washed. Only pigments that well resist oxidation make up valuable dyes.
两列火车发生了对撞的惨剧，131名乘客不幸遇难。唯一的幸存者大卫醒来后发现自己在费城医院的急诊室中，更奇怪的是他不仅得以生还，而且全身上下一点儿伤也没有。这次事件引起一个名叫伊利亚的黑人的注意，伊利亚天生手脚残废，命运多舛的他认定大卫身上有某种超自然的力量。男主角大卫能如此幸运地躲过劫难，究竟是老天的恩宠，还是冥冥中有不可思议的邪恶力量在控制著他？在伊利亚的引导下，大卫逐渐发现了其中的秘密…… 布鲁斯威利斯扮演的大卫是一位遭遇家庭危机的中年男人，在大学体育馆从事保卫工作，以前曾是美式橄榄球运动员。在一次从纽约返回费城的路上，大卫乘坐的列车发生事故。车上的乘客除了大卫全部遇难，而大卫却毫发未伤。当地媒体报道了这一事故，并特别提到了唯一的幸存者大卫。
3.1 Create syntax as follows
蔡田与女友喵喵商议结婚之事。但是，一声“蔡田开门”打乱了蔡田与喵喵的计划，蔡田的前妻海蒂带着男友汤米从美国回来了。海蒂是一个大气、自信、骄傲，有性格的女人，并且一直指导着蔡田的人生。海蒂生下爱女米丽，与蔡田离了婚，在蔡田心甘情愿的祝福下，远渡重洋到了美国。海蒂的回国一方面是受美国总公司所托，来整顿国内子公司的财务，另一方面海蒂是为了女儿米丽，她要把米丽带去美国受高等教育。米丽是蔡田的命根子，蔡田则是米丽攀岩的大石头，两人既是父女又是哥们，要想拆开他俩，容易吗？蔡田的家除了有一场惊心动魄的米丽争夺战要热烈上场之外，还有前任岳父、岳母大德与娴淑各自玩网恋，迷恋网友，还互赠信物，他们之间的离婚进行曲随时要开锣。蔡田的好友晓巧与超群这对欢喜冤家他们之间婚姻危机的不断出现也没有少过一章。蔡田的堂第蔡林与乔安不时的兴风作浪也有一定程度的破坏力。想想看，有了他们不分早晚的进进出出，蔡田家的大门能关得上吗？不！简直就是一家二十四小时营业的超市，永远不会打烊！
Update to the latest version that supports 7.1. 0;
But we didn't realize it until the first big mouse emerged from the trench of the position. The big rats under the "earth beam" are only a few that dig shallow holes. Most of the deep digging is simply not visible from the surface, This is what I said just now. If you dig shallow, you can barely hit it. You can't see it deep, There is no way out, At last this thing was dug up and emerged directly from the trench wall. Then don't even shake the soil on your body, Bite at the sight of men, As the number of drillings grows, In the end, there were several times more rats than people in the position. Forming a situation of several besieging a soldier, Seeing the urgency of the situation, But 'the lame man caught up with the uneven road' (this is a folk proverb, meaning to make things worse, the house leaks when it rains at night), The big wasps that were repelled for the first time launched another attack, or from the left and right wings, in your words, this also formed the "open space" to cooperate in the battle. It is very strange that the big wasps did not attack the big rats on the ground at one time, but only stung people. They are obviously "a group" of dogs. Alas, then we will fight too badly. " Zhang Xiaobo said with a long sigh here, and I couldn't help but be surprised. This big mouse can dig out more than 100 meters of passages underground in more than half an hour. How fast is this? That's a speed of more than 30 centimeters per minute. Although it is said that the soil on the southern border is softer and no harder than that in the north, it can dig more than 30 centimeters per minute. This speed is really staggering.
陆亚南、陈羽静、何美芬、潘嘉辉从医学院毕业，进入安然医院。紧张的工作和频发的意外使他们对医生有了理解深刻。医院泌尿外科主任肖克明成熟冷静，谨慎小心，副主任钟立伟玩世不恭，正直张扬。两人性格迥异，在生活与工作方式、年轻医生的培养等问题上冲突频发。患者李中天离奇死亡，给陆亚南留下了巨额遗产，陆亚南被李中天的儿子纠缠不休。无良律师雷震拿何美芬打赌，欺骗何美芬感情。一个精心策划的骗局和陷阱，何美芬勇敢面对。陈羽静因一次患者家属没有签字的手术而被告上法庭。陈羽静不服判决结果，顶着被医院停职的压力坚持上诉。不法分子魏德豪利用安然医院谋取不义之财，潜伏在医院内部的神秘人虎视眈眈，肖克明和钟立伟从误解到联手，为了医院和医生的名誉和清白，忍受委屈，经曲折调查，真相最终大白。医生们迎来了一个灿烂美好的明天。
Telecommunications
Implementation code:
一两个月前吧，我和何薇正式分手。
杨长帆默然一叹，上前一步，做出了一个令人惊讶且恶心的举动。
In addition, there is a small mistake in the answer on the first floor. Spark and Moon Fire are both arcane.
……武界出版社。
在城里开公司的赖亚洲，因不善经营，加上霉运连连，导致负债累累。而想当好村支书的马晓棠得罪全村人，也是焦头烂额，洋相百出。误打误撞的马晓棠误把赖亚洲当成大能人从城里请回村，推上村长位置，期待他解救自己和全村的困境。赖亚洲这个新村官意外为全村找到科学发展的新路。但是恪守政策、不懂变通的村支书马晓棠却对赖亚洲的“盘外招”又爱又恨。赖亚洲和马晓棠，两个既“相克”又“互补”的欢喜冤家，在纠缠不清的麻烦和风波中前进，同时收获到始料未及的爱情。
