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The attacker first completes the three-way handshake to establish the connection, but in the last ACK reply of the three-way handshake, the TCP window size is set to 0, and then a data request is made. When the attack target sends the request result to the attacker, it stops the data transmission when it finds that the TCP window size is 0, and sends out a TCP window detection packet to ask the attacker if the TCP window has been updated. Since the attacker will not update the window size, the attack target will always maintain the TCP connection and wait for the data to be sent, and continuously carry out TCP window size detection. When the number of controlled hosts in the botnet is large, Target's connection table will gradually be exhausted, resulting in denial of service.
TCP is connection-oriented, and a connection must be established between either side before sending data to the other. In TCP/IP protocol, TCP protocol provides reliable connection service, and the connection is initialized by three-way handshake. The purpose of the three-way handshake is to synchronize the serial numbers and acknowledgement numbers of both parties and exchange TCP window size information. The process of shaking hands can be represented by the following figure
若干年后的人类社会,一款由梦公司发行的游戏风靡全球,就在游戏狂热吸粉时,却屡屡发生玩家被困、神秘失踪等事件,PAD遂派遣“天狼”成员冷峰以游戏工程师欧阳雪的保镖身份进入游戏进行调查。两人进入游戏后,却意外发现这里其实就是异空间的封存地,而游戏,也不过是“猫头鹰”的人体实验基地。随着众多玩家被救,同时为了阻止“猫头鹰”进入异空间得到核心,打破他们继续人体实验的阴谋,双方展开了一场殊死较量。
Using the CPS1 simulator shown in the following figure, all masterpieces are tested and the simulation is perfect.
红椒惊觉失言,急忙捂住嘴,可是已经晚了,黄夫子跟初雨目瞪口呆地望着她。
Red: safflower, madder
《神盾局特工(Agents of S.H.I.E.L.D.)》是漫威公司制作的真人动作剧集,由《复仇者联盟》导演乔斯·韦登执导,乔斯·韦登及其弟弟杰德·韦登、弟媳毛丽莎·谭查罗恩共同参与剧本创作。剧集聚焦神秘组织神盾局,主角是人类特工,而不是“复仇者联盟”的那些超级英雄。2013年9月起每周二在美国广播公司播出。
除了项羽还会有谁呢?只是他能够做的长久吗?尹旭不禁暗自腹诽。
昭和四大奥特曼与平成四大奥特曼的豪华大集结!
Don't be too hard to the ball, it is easy to hurt your fingers.
如此一来,李左车已经有些扛不住了,立即向西征路上的齐王韩信送去了求援信函。
Under the English input method, enter "M", type the space, select the picture block that needs to be moved, type the space, click the left mouse button to start moving, move the required position, and then click the left mouse button. Done.
杰森(德鲁·傅勒 Drew Fuller 饰)与爷爷霍华德·史蒂文斯(詹姆斯·加纳 James Garner 饰)之间似乎从未有过所谓祖孙情深的桥段,杰森唯一知道的就是向爷爷要钱。当爷爷去世后,杰森满心以为可以继承一大笔财产,前途无忧之时,他发现爷爷竟在他和这笔财产之间设置了十二道障碍,他必须依次完成遗嘱上的十二个有关“礼物”的任务后,方能得到这笔最终的超级礼物。为了获得遗产,杰森只好着手完成第一个任务,没想到得到的礼物竟是让他尝尝破产的滋味,而这仅仅是开始,对于几乎没有过正式工作的富二代杰森来说,遗嘱上的每一个任务都是一次艰难挑战,他不知道在这条发现之旅上他还会遇到什么,也不知道爷爷到底在卖什么药,然而他的人生却因为这份遗嘱正悄悄地被改写……
Stephen: English Christian name + Greek derived from the Middle Ages, meaning "crown", English surname, male first name, nicknames Steenie, Steve, Stevie.
I hope my answer can help you!
Wavve确定推出LGBT恋爱综艺《Merry Queer》,将会展示LGBT群体在面对恋爱关系时的挑战和考验。
In general, DoS attacks are the easiest and least complex type of attack. Some people even say that an 8-year-old child can participate in DoS attacks, and this statement has some truth, because some tools can be as simple as putting an IP address and clicking "Start".
在[日月旅行社]内一个[团友交谊会]上,看似虔诚基督的领队,其实是卧底国际刑警,他往泰国目的是以旅行团领队的身份,追查一宗伪钞案。一到曼谷,他便展开调查,无奈却发现伪钞集团因风声太紧,早已停止活动,茫无线索之下...... 刺激,搞鬼的故事由此展开!
蒋文韬(郑少秋 饰)是香港最成功的大狀之一,他能言善辩,专为富豪们解决官非,因此得以跻身上流社会。虽然家财千万,但他却喜欢跟跟计较,为人尖酸刻薄,连女儿思庭(唐宁 饰)十分讨厌父亲这种为人,所以虽然她也是律师,但和父亲很少来往。蒋文韬是富豪倪承坤(石修 饰)的御用律师,专门帮他打官司。倪承坤欲收回父亲当年建的一栋旧楼,因旧楼里住着一班姑婆,而倪父一直都没有向她们收房租。蒋文韬查出了这一事实,于法庭上质疑倪父和其中一名姑婆有染,最终打赢了官司。这种为赢官司不顾人死活的做法引起了在法律援助处工作的书记庄晓慧(苏玉华 饰)的不满,两人一直斗气。
主人公是一位有着极为罕见完美记忆的警探Carrie Wells,由派琵·蒙格玛丽(Poppy Montgomery)扮演.Carrie所经历的每个地点,每次对话,每个伤心与快乐的时刻都牢牢地嵌在了她的脑子里,她无法忘记这些,但只有一件事是例外,她姐姐很久以前被谋杀的细节.在经过了一段时间的休息后,Carrie感觉回到工作中对她来说是无比正确的选择,但在解决一起凶杀案的时候她不得不和前男友兼自己的搭档NYPD警探Al Burns (迪伦·沃尔什)再次共事.他们这一小组的成员还包括Al的搭档Mike Costello (Michael Gaston),队中的新手Roe Saunders (凯文·兰金)以及有些小聪明的Nina Inara (Daya Vaidya).虽然对Al心存复杂的感觉,但Carrie还是决定加入他的小组去专门解决凶杀案,当然,她更希望借此能解决自己姐姐的被杀之谜,她所要做的,就是"不可遗忘".