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.
英语单词Earthling，意指地球上一切居民。它不只是针对人类而言，更包括生存在这个星球上的所有生命。然而愚蠢的人类自认为是最完全的生命体，这他们所处的世界拥有绝对的支配权。在这股极端的物种主义思想影响下，每天有成千上万的生命惨遭杀害。当人们享受通过折磨、残害其他生命所带来的快乐之时，地球变成了令人不忍卒睹的血腥地狱……
7. Result analysis, including, for example, prediction distribution, error analysis and difficult samples, etc.;
张良续道：只有这样，凭项羽的无可比拟的勇武和胆识，范增的高远的智谋兵法，再辅之以尹旭、英布、龙且、项庄等众多一等一的战将，此战才有胜利的可能。
周柏豪、袁偉豪兩位充滿正能量的「男神」，由初出道至今都老友鬼鬼，趁有空檔來一次歷險之旅，地點竟然只在香港？本地其實亦有許大自然秘境，露營仰望漫天繁星、煮柴火咖啡、山澗捉魚、瀑布下沖涼，這樣的生活試過未？從野外求生，到豪華Glamping，以及一系列上天下海的活動，兩個愛互窒的大男孩均會親身體驗。只享受「男人的浪漫」似乎好寡，期間不如相約星級知己齊齊Camping，既輕鬆又辛苦地執行港式野外任務！
We can also specify the number of the new rule when adding the rule, so that we can insert the rule anywhere. We just need to slightly modify the command just now, as follows.
镇军营指挥使心里一跳。
AMC续订《行尸之惧》第七季。
Chapter IV Fire Protection Technical Service Activities
卡内利亚斯火速下令：白旗。
在下好歹也曾经是‘神童，也蒙皇上隆恩。
"When the two mountains were fighting, I have fought many battles, However, the most impressive one was the battle to defend position 149 during the July 12 War. I thought that the war was between people and people. I didn't expect to fight with animals here, not only animals, but also flying in the sky and drilling in the soil. If it weren't for the use of new shells to support us later, the position would have been lost. "
BT in BT investment mode is the abbreviation of build-transfer, which is a kind of rich investment mode created or simplified by Yan Jiehe, a dark horse tycoon on the 2005 Rich List. Compared with BOO (construction-operation-operation) and BOOT (construction-ownership-operation-transfer), BT investment mode has less operation link for the construction party. Its essence is the transformation of BOT (build-operation-transfer) mode, which means that the project management company advances funds to carry out the construction after the general contract, and then transfers the construction to the government department after the construction acceptance is completed. That is to say, advance funds to build infrastructure projects that the Government cannot start for the time being, and then let the Government repay in installments, thus making huge profits.
不知疲倦地寻找他失踪的女儿乔迪，耐莉将不遗余力地揭露真相和地狱发现更多关于他自己和周围的人比他想象的。
李斯点头道：好的，大王放心，迁都的时候，英雄墙肯定会修好。
汉普湾的观光旺季即将来临，风帆大赛也将展开，不过却发生了鲨鱼事件。方富商及主办人山姆路易斯执意不延后比赛及关闭海滩，以为能用鲨鱼网阻止任何鲨鱼进入，不料这条食人巨鲨是经过海军训的杀人机器，不但闯进赛，肆恣猎杀选手们，之后更杀死所有追捕它的人。海洋学家比利和索伦家人要如何对付这可怕的怪物呢？
杨长贵就住在这里，并非他主动要求，而是杨寿全早早安排的，几天下来小二十两的开销，对杨寿全来说也不小，但为了小儿子，值得。
On the left are fake socks and on the right are real socks.
该剧讲述了一所著名中学在成立理科班过程中出现的困难波折，深刻反映了当前独生子女教育乃至整个中国式家庭、学校、社会三方面教育中的问题。
