Abstract public int calculation (int num1, int num2);
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.
Liaoning Province
《黑狱悲歌》以 20 世纪 90 年代中期为背景，故事主角克里斯蒂娜是一位诚实、敬业的律师，她发现关系疏远的哥哥被关在监狱，并且是不断壮大的犯罪团伙的头目。在警方的要求下，她成为一名线人，来对付自己一直崇拜的哥哥。但随着她渗透到兄弟会内部，她开始质疑到底什么是正义和公平。
再说，这真不远，我就当散散步
陈启看向长评。
Macro commands: d, df, f, df, d, db, b3
约翰·达顿是达顿家族的一家之长，坐拥着美国最大的牧场，与牧场毗邻的有美国首个国家公园、印第安人保留地以及土地开发商买下的地皮。在一次因牲畜误入印第安人保留地引起的争端中，不幸的意外伤亡事件发生，一场涉及多方的争端在蒙大拿州这片美丽的土地上拉开了序幕。
It must be placed for one year before taking medicine. I forgot the reason.
老范名叫范春雷，生于六十年代。按照老范的老婆丁小婉的话讲，老范这的人最大的优点是热情，最大缺点是过份热情。善良中有些愚钝，憨厚中有些自卑；真诚守信，尊长爱幼，在为人处事方面甚至显得有些单纯和不食人间烟火。按北方话讲，老范就是那种凡事从来不把自己当外人的人，换作网络新词就叫“雷”。老范很“雷”，不仅“雷”，而且“春雷滚滚”。作为一个四十多岁的中年人，老范也正处在上有老下有小、面临着中年危机又怀才不遇的尴尬时期。一天，在买早点的途中，范春雷骑着“山寨”版的电动自行车与刚被房产中介开除的失意青年许大来撞在了一起。一场误会使自认倒霉的范春雷成了抢劫犯，耽误了家人的早餐不说，还被派出所的警察按倒在地。尽管冰释前嫌后与许大来成了忘年交，但还是因此丢掉了饭店的厨师工作……
莉可在深界四层中了穿弹兽的毒。
他将弟弟放下，对着老婆子双膝跪地，道：奶奶，你别哭了。
主人公颜书仁在读博期间，与学妹孙树意外相遇相爱。在两人恋爱时，因双方家庭变故，书仁办理休学避开孙树，孙树选择去德国留学。5年后，被他们的老师陈沅庚相继邀请进思康医院。重逢后的书仁本想修复与孙树的关系，但起初孙树反应冷淡，后来在其母亲治病过程中，开始感受到书仁的爱情。书仁因为治疗患者，孙树一直帮助他，两人重新和好。陈一凡是颜书仁本科时的学弟，并对孙树渐生爱意，孙树迅速拒绝了陈一凡。书仁意外得知母亲8年前因车祸去世，他陷入严重自责甚至对自己的职业成就产生了怀疑，在孙树的努力下，颜书仁逐渐康复，两人决定重回德国留学地，走入婚姻生活。
Aban's dealings with various Japanese figures are even more brilliant. The Japanese in his works, Including Japanese Foreign Minister Yoyo Matsuoka, Minister to China Shigemitsu Mamoru, Consul General to Nanjing Sumomikiro, Commander-in-Chief of the Fleet in China Yanze, Japanese Minister-at-Large Kato, Commander of the South Fleet Iwamura Kiichi, Commander of Japan's Third Fleet Lieutenant General Hasegawa, Commander of the Shanghai Dispatch Force Ishiguro Matsui and his subordinate Colonel Hashimoto Shinichiro. He is especially concerned about Ishiguro Matsui, who is the primary responsible person for the Nanjing Massacre, and many details are rare in domestic publications. It is generally believed that Matsui and his 80 officers were recalled by Japan because of excessive negative reports on Japan after the Nanjing Massacre. After reading this book, it is known that the main reason is related to the sinking of the US ship Panai by Japanese planes in the Yangtze River. The report that dragged Ishiguro Matsui off the horse was published in the New York Times by Aban and caused a sensation. Aban also depicted a bunch of inferior Japanese characters, including cunning, loyalty, stupidity, shrewdness, aggressiveness, gentleness... no longer one thousand people, exaggeration and distortion.
科学家终于发现了往返古今、令时光倒流的神秘缺口，却无法估计原始恐龙一旦造访，今天的洛杉矶，将会出现如何灾难性的暴虐……
一个山村少年，在完成由乡村到城市的梦想后，在权势和财富的诱惑下，又向着升官发财的终极目标前进、奋斗的艰辛旅程。
高阳跟父亲从小不对付。高斌一个人把儿子带大，高阳却跟爹没大没小，直呼其名，态度好时也就叫个“斌哥”。他三天一翘课，五天一干仗，疯狂试探老师和父亲对他的忍耐底线。虽然校长的女儿金贝贝对他很有好感，但他却追着班花跑，班花一走，他的心也跟着飞到了北京。回到学校的高阳并没有消沉太久，金贝贝和田梦告诉他，虽然班花转走了，但有个更漂亮的大美女要来班里了，她叫叶晓文。高阳偷偷去办公室瞥见了转学生的样貌，果然人如其名，高阳怦然心动。令他没想到的是，走进班里的叶晓文竟是个男生！
16. I hope the company can carry out some amateur activities to promote the team consciousness and positive mentality of employees.
民国初年，军阀混战，名存实亡的末代皇帝溥仪在遗老们的操纵下挑选王妃。在溥仪的轻视和太妃们的明争暗斗的中，溥仪迎娶了皇后婉容和妃子文绣。文绣是落泊的旗人后代，温柔老实；婉容接受的是洋式教育，生性爱玩。新派的婉容向往洋式生活，与陈旧的宫廷生活格格不入，但却得到受洋式教育影响的溥仪的喜欢；传统的文绣虽然一心想做好皇妃，却倍受皇上冷淡
当直男遇上GAY会发生什么样的故事？Type是一名大一新生，阳光帅气，朋友众多，但他不喜欢gay！而Tharn是传说中的完美室友，但Tharn偏偏是gay！Type和Tharn间因此而产生了一系列啼笑皆非的故事，是什么原因造成了Type对gay的反感？Tharn和Type之间又会如何发展？
