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The way of this attack is that the attacker can renegotiate quickly and continuously in an SSL connection, and the CPU overhead of the server is about 15 times that of the client when negotiating the encryption algorithm. If a large number of controlled hosts attack at the same time, the server will be busy negotiating the secret key and stop responding completely.SYN attack is a kind of DOS attack. It takes advantage of TCP protocol defects and consumes CPU and memory resources by sending a large number of semi-connection requests. SYN attacks can not only affect hosts, but also harm network systems such as routers and firewalls. In fact, SYN attacks can be implemented as long as these systems turn on TCP services no matter what systems are targeted. As can be seen from the above figure, the server receives the connection request (syn=j), adds this information to the unconnected queue, and sends the request packet to the client (syn=k, ack=j+1), then enters the SYN_RECV state. When the server does not receive an acknowledgement packet from the client, it retransmits the request packet and does not delete this entry from the non-connection queue until the timeout. With IP spoofing, SYN attacks can achieve good results, Typically, clients forge a large number of non-existent IP addresses in a short period of time, SYN packets are continuously sent to the server, and the server replies to the confirmation packets and waits for the confirmation of the customer. Since the source address does not exist, the server needs to continuously resend until it timeout. These forged SYN packets will occupy the unconnected queue for a long time, normal SYN requests will be discarded, the target system will run slowly, and in serious cases, the network will be blocked or even the system will be paralyzed.喜欢偷盗题材的故事吗？风软将呈现给你一部曲折离奇悬念迭出的偷盗戏码——Hustle 对于团伙来说，Mickey就是头 儿，才智过人，作案计划都出自于他手。Albert是一个经验丰富的老千，晚年扮演起“设套者”的角色，找寻合适的受 害人，然后带着受害人走入“军团”的圈套。Ash则设计最合情合理的情境和用起来最顺手的作案工具，让你的戒备心 沦陷在最普通的情境里。Stacie随时准备用她女性的魅力去协助小团伙作案成功，美女的花招谁也躲不过。这样就够了 吗？不。在一个名叫Danny的年轻骗子被Mickey收归羽翼之后这个团队才趋于完美。 一部偷盗拐骗的教科书，一伙奉行 着诚实正直的人不骗，要填饱贪欲，永远为自己着想，作案不是为了金钱等原则的英国绅士淑女们呈现给观众的眼球大 餐——Hustle 还在为NBC的新剧HEIST被腰斩而痛心吗，停止悲伤吧，喜欢偷盗题材的剧迷看好了，英国BBC公司2004年 出品的HUSTLE是同题材的上佳之作，一个由偷盗精英所组成的偷盗团伙，每一集里都上演悬念迭出，惊心动魄，精彩纷 呈的偷盗戏码。目前已经播完第三季。这一段时间，夏林不但要拍摄《笑傲江湖之东方不败》电影，还要照看《笑傲江湖》电视剧的拍摄工作，简直忙透了。(3) There are more than eight registered fire engineers, of whom at least four are first-class registered fire engineers;尹旭的动作飞快，根本不给他任何迟疑的时间，剑影闪过，兵器相交声不绝于耳。也就在十里长亭醒过一次，喝了点细米粥，接着又睡，这会子才醒来