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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.张居正微笑摇头：这个，其实微臣也不知道。亲卫一手挽着他的马缰，一面点头，问道：然后呢？刘井儿心想红椒性子爽利，不管如何决定，一个时辰应该够了。6. Ships should be especially cautious when driving near the end of the traffic separation system area.当他来到一个叫侯监集的小镇上时，适逢许多武林人物为一枚玄铁令大动干戈。他是个小乞儿的样子，谁也没注意，却因为饥饿太甚，捡了个混战中撒落在地的烧饼吃，意外地得到了玄铁令。正在众人发现，各各威逼利诱之时，玄铁令的主人谢烟客适时赶到。将玄铁令夺回。但这个魔头恪于诺言，必须答应为持令者做一件事，他怕众人教唆这个小乞儿让他干不利于他的事，便连令带人一起携走。不料他想尽办法也不能让石破天求他一件事，石破天告诉他，母亲对他的唯一教诲，便是不管怎样也不能求人。他虽然是乞儿却从不乞讨，别人给他吃他就吃，别人不给，他实在饿了，便拿了就吃，他也不知道这叫偷，也不觉得有什么不对。内忧外患的晚清，西太后和庆王爷、礼亲王把持朝政。朝局十分不堪之时她最后决定要素来被人认为是糊涂和不堪大用的惇王爷重新执政。惇王爷早年我行我素，当年因泄露消息得罪了西太后，又和自家的女仆大蓝子媾和遭到众亲贵的反对被发去守皇陵。虽然表面上惇王爷是个有些混和糊涂的王爷，但内心里他却是个诚恳和可爱的实在人。惇王爷先是被任命管户部。前任户部尚书，因为亏空粤海关的关银被杀头。惇王爷先到来本来是以诚恳待人，想到遭到了众人的强烈的反对。众人不但不买他的帐，还想尽了办法来折磨他。因为他想查库查帐。到了后来，惇王爷才明白。其实，这两件事都不是他能做得了的。有人点明了他。其实众人之所以瞧不起他，是因为认为他只能打苍蝇，不能打老虎。惇王爷立刻明白。他开始针对上了庆王爷。前任户部尚书的女儿知道自己的父亲为何而死。所以她来找惇王爷。这下惇王爷立刻有了目标。他要把庆王爷办了，这样才能整肃朝政。单纯的惇王爷是以诚待诚。他直接来找庆王爷，想跟庆王爷交心。结果庆王爷不但没有将钱还回来。反而庆王爷还捏着了惇王爷的一个把柄，那