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.
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……陈启的一个书名就弄出如此大的声势，侠客文化那边再也坐不住了。
Public User getUser1 () {
汪魁见黎水不让他吃了，只得移到胡钧身边，望着那剑上有些焦黑的肉，犹豫地问道：你确定这个还能吃？胡钧气道：我让你吃了吗？你想吃，我还不让呢。
女優でモデルの内田理央（２５）がフジテレビ系ドラマ「将棋めし」（８月２日スタート、 水曜・深夜２時４０分）で連続ドラマ初主演することが２２日、分かった。
严克等人都称谢不止。
对一些人来说,西方是一机遇和冒险的目的地。对另一些人来说,这是危险的核心和绝望。雇用当ex-lawman普雷斯顿比格斯护送一群妇女遭受草原发烧回到文明,他们遇到了一个杀手团伙意图阻止他们。看似不可能的旅程之前,该组织发现最后一个希望当他们加入了一个美丽的女人的火力,将匹配任何。
这个孙子读书还争气，今年居然过了县试，虽然最后府试没过，那也让他老脸长了不少光彩，看得比命根子还重。
此乃武侠小说之祖。
俞心蕾（徐熙媛 饰）原是一个生长在富裕家庭的上海姑娘，她有公主般的生活，才貌双全，有一个疼爱她的未婚夫尚东，她把一切事情都想得理所当然，但家中生意面临困境，她的景况也改变了。
该剧改编自J·K·罗琳以“罗伯特·加尔布雷斯”为笔名创作的侦探小说系列，1-3集为《布谷鸟的呼唤》，4、5集为《蚕》。
四妹海莉，一个因听障而自卑退缩的温柔女孩，只有大哥的肩膀才是她幸福的港湾，但当亲情渐变为爱情，她却失去了表白的勇气，却令兄弟反目、家人失和，她的爱，究竟该不该？
《凶宅处理专员TheSurrealtor》讲述房地产经纪NickRoman及他的精英团队专门负责一种案子：会把买家吓跑,确实在闹鬼的凶宅。不过在调查﹑处理凶宅的过程中,主角们在这环境下也得和自己心魔作较量。
3. The state switching is not obvious, only the state variable is assigned, such as this.state = 'weakLight'. In actual development, such operations are easily missed by programmers. There is no way to clearly understand how many states there are in the light unless you patiently read all the code in the buttonWasPressed method. When there are many kinds of states, the process of a switch seems to be buried in a dark corner of a huge method.
都必定是伤人也伤己——田夫子固然下场不会好，但镇国公府也会沦为京城人的笑柄，他将会顶着一顶大大的绿帽子入土。
In early December 2016, young coaches in Scotland and Northern Ireland were also charged with sexual abuse.
当然了，这件事情一定要滴水不漏地瞒着。
