Note: The following figure is only used to illustrate which tables the rules on the prerouting chain exist in, and does not describe the order of the tables.
In TCP implementation, when receiving the SYN request from the client, the server needs to reply the SYN + ACK packet to the client, and the client also needs to send the confirmation packet to the server. Usually, the initial serial number of the server is calculated by the server according to certain rules or adopts random numbers. However, in SYN cookies, the initial serial number of the server is obtained by hash operation and encryption of the client IP address, client port, server IP address, server port and other security values, which is called cookie. When the server suffers from SYN attack and makes the backlog queue full, the server does not reject the new SYN request, but replies the cookie (SYN serial number of the reply packet) to the client. If it receives the ACK packet from the client, the server subtracts 1 from the ACK serial number of the client to obtain the cookie comparison value, and performs a hash operation on the above elements to see if it is equal to the cookie. If equal, complete the three-way handshake directly (Note: At this time, you don't need to check whether this connection belongs to the backlog queue).
1. The most common method is to determine whether the savedInstanceState is empty or not in onCreate (Bundle savedInstanceState) and restore the data body in Activity;
TVB6月开拍时装女性爱情喜剧《爱美丽狂想曲》，已知主演有陈豪、李佳芯、萧正楠、曹永廉、杨诗敏等，监制罗永贤。
ALT + TK such as quick selection
《天 天和街浪子》讲述了以代打天为中心的麻将故事，从1989年至2002年于竹书房的《近代麻雀gold》上连载。对于这次的真人化，主演岸谷表示：“先要从麻将入门开始学习。在专业老师的演技指导中，学习了拿麻将牌的方法。在坐新干线（类似高铁）的时候，一直为了熟悉麻将而摸着牌。”而本作的原作者福本伸行表示：“相信曾制作过《银与金》的制作团队能将麻将电视剧的有趣之处表现出来。另外主演的岸谷五朗也有原作主人公的气质。”
所以我说嘛，不用非在一棵树上吊死。
Proxy is an object, which can be used to control access to ontology objects. It implements the same interface as ontology objects. Proxy objects will pass all calling methods to ontology objects. The most basic form of the proxy mode is to control access, while the ontology object is responsible for executing the function or class of the assigned object. Simply speaking, the local object focuses on executing the code on the page, while the proxy controls when the local object is instantiated and used. We have used some proxy patterns in the above monomer patterns, that is, using proxy patterns to instantiate the monomer patterns, and leaving other things to ontology objects.
山芋说得对，我张红椒这样的人，绝不会为这种事烦心。
看看我们的小玉米是如何机智吧。
玩闹一会，他们忽然吵了起来。
《蔚蓝之境》是中国的纪录片团队第一次以自然纪录片的方式，全面、系统地拍摄海洋的故事，也是迄今为止我国规模最大、范围最广、内容最为全面的海洋拍摄行动。本片共6集，以中国近海为舞台，带领观众纵览海面冰封的渤海湾，四季分明的黄海、东海，长夏无冬的南海，分别从季节、潮流、滨海湿地、海岛、海湾、生存挑战等几个角度，讲述海洋生物的故事，呈现一片神秘、壮阔、活力的蔚蓝之境。
One of them taught me to be a gentle woman.
At the beginning of the interview, First he lit a cigarette, Spit out a cigarette ring squinting eyes first thoughtfully for a moment, like thinking and organizing language, through the smoke of cigarettes, I can see his slightly flashing eyes in the light, as if the scene of heavy gunfire reappeared in front of his eyes, finally he smoked the second cigarette and dropped the ash, this just began to say:
2017年1月5日，星期四，美国广播公司为时两小时的特别节目，名为《真实与谎言:梅内德斯兄弟》，重新审视了这起双重杀人案并接受了采访。
一切似乎不止是水管漏水那么简单，怪异的事情接连发生，房间似乎有了自己的生命，一心想找出真相、保护自己深爱的女儿的达莉娅不知不觉陷入了更深
在遥远的东方世界，有一座与世无争的世外仙境“太阳岛”，岛主之子龙威是一个典型的“网瘾+废柴”少年，却整天做着展翅高飞，拯救世界的白日梦，因为根据古老的预言，当整个世界陷入邪恶黑暗的时候，太阳岛上的太阳鸭就会出现并带领大家对抗邪恶，保护每一寸土地都能照到阳光,滋润万物生长,不受到邪恶力量的威胁。多年后的某一天,绿头鸭军团意外来到太阳岛，东方鸭与绿头鸭之间的矛盾对抗打破了太阳岛长久以来的平静生活，意外的是身为太阳岛岛主之子的龙威与绿头鸭司令的女儿艾瑞卡，却在东方鸭、太阳鸭的高压对峙下陷入到了甜蜜恋爱之中，然而就在双方剑拔弩张战况愈演愈烈之际，那个被众人遗忘的“黑暗寓言”却在邪恶女巫婥特的布局下悄然发生……黑暗降临之际，曾经的“废柴+网瘾少年”的龙威能否突破宿命，成为拯救世界的鸭界超级英雄——太阳鸭呢
觉得她好像好些了，不似在金殿上那般冷冷清清的，松了口气，心疼地说道：谢什么，你吃了那么多苦头。
