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.
赶，赶不走。
Sentinel clusters communicate with each other, Communicates the status of the redis node, Make corresponding judgment and process, The subjective offline state and the objective offline state here are more important states, They determine whether to fail over, You can subscribe to the specified channel information, When the server fails, notify the administrator that the client can regard Sentinel as a Redis server that only provides subscription function. You cannot use the PUBLISH command to send information to this server, but you can use the SUBSCRIBE command or the PSUBSCRIBE command to obtain corresponding event reminders by subscribing to a given channel. A channel can receive events with the same name as this channel. For example, a channel named + sdown can receive events that all instances enter the subjective offline (SDOWN) state.
随后两天。
杨长帆见众人态度松动，当即转向胡宗宪怒目而视：老贼。
However, that implementation of individual step at a more detailed level may differ, and we usually consider use the template method pattern to handle it
本剧改编自2003年由Kob和Oil主演的泰剧亲爱的女士，主要讲述老板与女保镖的爱情故事。
I thought it was a long time. I thought about whether to add an article and send it next Friday night.
PS: If necessary, I can make a video on the skills of Blood River. Please comment or put forward different opinions below. Please indicate Bilibili Xilin Gyoro for reprinting. Explanation of Supporting Victims and No Resurrection
故事发生在南方某海军新兵入伍后的故事。一群从城市里来到部队当兵的女孩，带着梦想，踏着青春的脚步走进了军营。部队严明的纪律，严格的训练，刷掉了独生子女身上的娇气，做一名合格的军人，成为她们理想的目标。
在「50」重案组的帮助下，McGarrett发誓要了结父亲遇害的案子，让父亲得到安息。与此同时，他也将带领自己的战友扫清这座美丽岛屿上的一切邪恶，让夏威夷－－美国的第「50」个州－－永远是人间天堂。
为了生计，心蕾不得不开始工作，期间受到了很多的委屈。心蕾把新认识的富家子孔彦祥作为了依靠的对象。秦朗渐渐对心蕾产生了感情，而往日的未婚夫尚东也找到了心蕾。秦朗只好将自己的感情藏于心底……
清朝雍正年间，朝近为阻绝据台抗抗清的明将郑成功，强制禁海，强制沿海百姓向内陆迁移叁十华里，从此人民离开了世代耕种的故土，背井离乡…
Console.log ("the leader has come for an interview");
1977年夏天，邓小平再次复出。在中央重新调整各省的领导班子时，时年61岁的陈丕显被任命为湖北省委书记。经过十年浩劫后的湖北，已经从昔日素有“鱼米之乡”、“九省通衢”的中原大省沦为问题大省，经济工作停滞不前，人民生活极为困难。如何重振湖北雄风，成为陈丕显工作的重点。他从关心人民群众生活，解放知识分子入手，积极推进湖北的真理标准讨论，加快大型企业建设，推动农村改革的步伐。五年间，陈丕显在湖北经历了一个由“解放思想”到“思想解放”的改革过程。他带领省委一班人解放思想，拨乱反正，以经济建设为中心，坚持改革开放，使得湖北的各项工作取得了迅猛发展。
无形的界线第一季……
一路清剿，偶尔传来短促的惊呼。
改编自现役外科医师・中山佑次郎的同名小说。故事讲述主角・雨野隆治（白滨亚岚）从地方大学医学部毕业后上京，于东京总合医院的外科进行研修。然而等待着他是什么都做不到，什么都不明白，被前辈医生及上司怒骂的每一天，在受伤以至救不了的患者面前无能为力的现实，让他深受打击，带着纠结多次流泪，然而他一直保持著作为医生的热诚，与同辈研修医一起成长。
