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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.卡米拉曾经自杀未遂。 在一天卡米拉和斯科特乘房车旅行。在后来卡米拉和斯科特分手，而迪尼斯和伊冯分手了又重聚。彼得在他的工作室里寻找灵感。 卡米拉在平行世界见到了汤米。在这期间父亲与母亲邂逅。而卡米拉在现实生活中遇见了汤米，，，，芳蒂妮·阿和蒂安([快乐结局])将加盟新片[爱慕](Adoration，暂译)。法布里斯·度·沃尔斯([国王口信])执导。该片讲述12岁的保罗爱上了女孩格洛丽亚(芳蒂妮饰)。格洛丽亚是保罗母亲工作的精神病院里一个精神分裂少女。在格洛丽亚犯罪之后，保罗决定帮她逃脱，两人展开了一场疯狂的旅程。　　鬼仔以叶秋心爱的盲女（霍思燕饰）为诱饵，迫使他进行一桩交易。宋国明闻风亦开始蠢蠢欲动。但是，正是在这场战斗中，宋国明得以慢慢意识到叶秋的苦心，而叶秋，也令鬼仔对自己的黑道生活有了新的顿悟。 ©豆瓣姜子牙师从元始天尊，修道中和狐狸精、野鸡精误会冲突，二妖联合玉石琵琶精向女娲求救。女娲劝服她们忘却仇恨。子牙法力大增，师弟申公豹妒恨，骗去他的补天七彩石。时逢商纣无道，女娲发怒，要三妖听命于有补天五彩石之人灭商。佞臣费仲和苏护交恶，要其女妲己嫁纣王。妲己不从，自尽时狐狸精附身，引诱纣王。子牙下山历练，被申公豹重伤，炼成金刚不坏之身。哪吒打死龙宫三太子被迫自杀，被太乙真人所救，帮助子牙。子牙诛杀玉石琵琶精。宰相比干引荐他给纣王，子牙见纣王听信妲己，弃官逃往西岐。文王姬昌被关七年，忍辱负重，被纣王认为无能放回，回西岐后拜子牙为太师，整军伐纣，三妖听命于有补天七彩石的申公豹，协助纣王，和子牙大战。Private int num1;不争这个。