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.
No.85 Sarah Geronimo
No.26 Kiku
15 million pairs. Stance has attracted many athletic talents, street filmmakers, hardcore musicians and NBA players.
停播一年后，《废柴联盟》第四季回归荧幕，“格林七侠”全员归来！ 本季从夏季结束后的新学期开始说起，由七位主角组成的学习小组再次面临选课问题，要找一门大家都能上的课并非易事，Jeff（乔尔·麦克哈尔 Joel McHale 饰）煞费苦心，为大家争取“冰淇淋史”课，这举动看似热心，实则出于想提前毕业的私心。“毕业”意味着学习小组的解散，众人纷纷对Jeff感到失望。Abed（丹尼·朴迪 Danny Pudi 饰）对此尤其不能接受，他又一次进入自己的幻想世界。 本季的一大看点是Troy和Britta的恋情，Troy该如何平衡女友Britta和好基友Abed之间的关系？上一季中囚禁了院长，差点毁了整个学院的昌，以患了失忆症的状态再次回到校园里来，他又会作出什么样的疯狂举动……
No.8 Dilraba
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终于能一劳永逸解决赵高的追杀，身为家主的范文轩自然格外开心。
一场契约娇妻假戏真做的游戏，他认为这是只是一个有趣的游戏，因此他接受了这场游戏并遇到了她，当他爱上她时这不再是他的游戏，但他不知道她是否也喜欢他...
Our definition of war, its reasons and its tactics are changing. The line between the threat to a country's network and the threat on its territory is blurred. As Adrianna Lafran wrote in the Atlantic Monthly: The act of cyber war must be regarded as an act of war.
本片根据梵缺的小说《爆笑宠妃：爷我等你休妻》改编。
老杨依然没放下书，用余光瞥了杨长帆一眼，有些得意地说道：也不逼你学，只是你现在要做事，总要先学会道理，若是不种海田，也便不急着学了。
《龙珠》新系列动画的舞台为悟空与魔人布欧的壮绝战斗结束后，地球重新恢复和平之后发生的故事。与自漫长沉睡中觉醒的破坏神比鲁斯的相遇，加上曾经被人敬畏为“宇宙帝王”的弗利萨的复活，在这些接连迫近悟空等人的威胁之上，地球周边还发生了星球消失的不可思议现象，更有神秘的新角色“象帕”登场。
人在同一天走进同一座军营，吃同样的饭，叠同样的被子，走同样的正步，却因为性格、动机、世界观的差异，彼此之间产生了各样的矛盾与冲突。在经历了一系列的挫折与磨练之后，他们完成了从普通老百姓到优秀军人的转变，练就了铁打的骨头，结下了生死的战友情谊，更铸成了为祖国、为人民一切行动听指挥、甘愿牺牲奉献的钢铁信念，表现出了和平年代的军人崇高的荣誉感与责任感。
Connector, connector device of each unit.
年初，陈立夫兄弟在浙江秘密成立特别训练班。爱国青年林天正、许松、沈文杰、顾一男等人被秘密招募。艰苦的训练让他们结下友谊，同时也给身为共产党员的教官高寒留下了深刻印象。在高寒带领下，林天正等人接受了入训以来的第一个任务。不料，他们被意外卷入一场阴谋之中。特训班的最高指挥官钱新之对林天正等人下达了追杀令。四一二事件爆发，林天正等人看清了国民党虚伪的嘴脸，主动协助高寒解救被国民党关押的共产党学员，最终揭穿了钱新之的丑恶面目。九一八事变后，日本的恶劣行径受到了以国际联盟为代表的国际社会的普遍反对，日本决定在上海制造事端以转移国际视线，林天正等人在高寒和另一名共产党员姚珂的帮助下，开始了抗日救国之路
天下有几人看懂了东方不败……东方不败为什么要死？令狐冲最后远走海外，这也太不值了。
