The SYN-Flood attack is currently the most common DDoS attack on the network, It is also the most classic denial of service attack. It takes advantage of a defect in the implementation of TCP protocol. By sending a large number of attack messages with forged source addresses to the ports where the network service is located, it may cause the half-open connection queue in the target server to be full, thus preventing other legitimate users from accessing. This kind of attack was discovered as early as 1996, but it still shows great vitality. Many operating systems, even firewalls and routers, cannot effectively defend against this kind of attack, and it is very difficult to trace it because it can easily forge the source address. Its packet characteristics are usually that the source sends a large number of SYN packets and lacks the last handshake ACK reply of the three handshakes.
When the SynAttackProtect value is 2 (Microsoft recommends this value), the system uses not only the backlog queue, but also the additional half connection indication to handle more SYN connections. When this key value is used, the TCPInitialRTT, window size, and slidable window of tcp/ip will be disabled.
Law of Demeter (LoD) is also called Least Knowledge Principle (LKP), which means that an object should know as little as possible about other objects. In other words, a module or object should interact with other entities as little as possible, making the system functional modules relatively independent, so that when a module is modified, the fewer modules will be affected and the easier it will be to expand.
"Because the artillery suddenly 'dumb fire', Later, it was said that it was the same as position 169, because the ammunition consumption was too large and too many shots would be supplied for a while. It was not wrong to say so, because at the peak of the attack, the number of the two strange things released by the Vietnamese army below was too large to count. Have you ever seen ants crossing the river? That's what it feels like, If they are piled together, The density is almost a "ball", So in this case, The firepower of the artillery group is especially strong, Ammunition consumption far exceeded previous expectations, After all, no one expected to meet such a thing at that time, We didn't know how to describe it when we sent back messages on walkie-talkies at the front line. Anyway, it just said that the number of enemies was very large. Hit them hard, It was also the most intensive shelling I have ever seen. In the blink of an eye, It is normal to drop 4-6 shells on an area of about one square meter or even at the same time. The entire position 142 trembled under the shelling, At last, I felt that the ground under my feet would be overturned. Now think about it. If it weren't for the artillery comrades' hard support for us, the dozen or so people and the guys in our hands at that time could not withstand the attack of so many strange things. If they were called to rush up, they would have to tear us up and chew us up.
请说。
不发言了，这不是心虚又是什么？难道这次《笑傲江湖》电视剧，真得会惨遭失利？……陈启的沉默，无疑纵容了很多人。
Chapter III Supervision Methods
不过彼此的出发地啊不一样，一个或许真是为了救人，另一人却只是为了利用而已。
七月十五，说艳阳高照那是委婉的说法，其实就是烈日炎炎。
板栗摇头道：不用。
黄豆却从袖中扯出一道状子，呈给王尚书，道：下官要告童侍郎：在任期内严刑酷法，草菅人命。
项羽已经向荥阳一带动兵，刘邦那边面临的压力不小。
这灶台两口锅，下面砌得宽，好似一面墙，供两条烟道走。
这国家比咱老百姓更不讲理。
BBC台将把J·K·罗琳的侦探系列小说改编成电视剧，这套以私家侦探科莫朗·史崔克为主角的作品，是罗琳用笔名“罗伯特·加尔布雷斯”创作的，已发行了两本，第三部即将发行。剧集虽然还未选定男主，但已确定在年末开拍，《偶发空缺》的编剧莎拉·菲尔普斯改编剧本，朱利安·法力诺执导。
一杯人血牛奶，为何会对人产生致命诱惑？
什么样的扭曲心理才会为之痴狂，甚至不惜接二连三，连环杀人？
非同寻常的杀手，超越常理的罪案，需要非同一般的警探。
年轻气盛的犯罪心理学高材生方木（李易峰 饰）出手相助，却被卷入其中；
身手不凡的野兽派刑警队长邰伟（廖凡 饰）嫉恶如仇，却难以走出内心泥沼。
两人联手，却成绝妙拍档！
一场身手的较量，心智的角逐，随之展开……
TreeNode nodeB = new TreeNode ("B");
至此，这场游戏就提前结束了。
