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.
最后，我知道很多人不信，认为我在过度解读，那我就再补充几个细节。
Guanghan Sword Spectrum: Yu E will not regret [skill damage] + moving distance * 15%.
有些存在，无可避免，无孔不入的出现了。
同样室急症室医生的裕 （马浚伟 饰）则周旋于护士长霞（陈芷菁 饰）与见习医生冬（曹众 饰）之间，无法选择，烦恼不已。
陈启准备解释一句，却听到许岚说道：是不咋样，不过比你身边的那个好。
此剧揭露了旧上海十里洋场黑恶帮派的残暴、危害无辜以及旧社会人吃人的残酷现象。
/tap (pacing and waiting)
183. X.X.66
《菜刀，又见菜刀》。菜刀网销售记录备案：第一天，卖出菜刀数：0把；第一周，卖出菜刀数：1把；第二周，卖出菜刀数：301把。买刀人：小马哥，郑浩南……
边境小城临江，阳光聋哑学校的校车向远山飞驰，校车上，校长张亚男用手语向孩子们讲述着沿途的风光，这时，孩子们惊慌的看着前方，一辆失控的帕萨特迎面驶来，校车左右躲闪，帕萨特冲出公路，撞上路边的山体，校车内，师生们面色铁青，张亚男急急下车，正这时，一辆灰色轿车，向这边疾驰。张亚男有种不详的预感，拉起王小萌急忙折返回校车，就在司机关闭车门的瞬间，一个男人手持散弹枪跳上校车，劫持了校车上的教师和学生，与警方对峙。至此，一场正义与邪恶的较量开始了……
一夜过去，葫芦精神好了许多，正双目炯炯地望着她。
Start building v4:
Six fairies
故事讲述受疫情影响而不得不去意识到“与人之间的距离”的现代，以“爱”与“距离”为主题，描述住在同公寓的男女6人相遇、交心的故事。
板栗跳过小溪，从小葱手里接过灯笼，对着山壁上一个不大的洞口照着，弯腰细看，禁不住就大叫起来。
再不进来就滚回你自己房去。
Luo Jian, Founder of Spark Thinking: "In the early days, the organization of the online thinking ability track, Basically, they have independently developed live broadcast systems, Therefore, the entry threshold for this track has been further raised. For entrepreneurs who still wish to enter this track, in addition to the construction of the teaching and research system and the polishing of the course content, it will also be essential to have a self-developed live broadcast system, because the use of a third-party live broadcast system will have a relatively poor user experience, which is not conducive to the perfection of their own courses and services, and the market competitiveness is relatively low. "
帰れない 片岡鶴太郎 立石凉子
String array [] = exp.split (opt);
