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That is to say, a total of false syn messages will occupy the TCP preparation queue for 63s, while the semi-connected queue defaults to 1024, which is different by system default and can be viewed by cat/proc/sys/net/ipv4/tcp_max_syn_backlog c. That is to say, sending 200 fake syn packets per second without any protection is enough to burst the semi-connection queue, thus preventing the real connection from being established and responding to normal requests. The end result is that the server has no time to ignore the normal connection request-denial of service.I nodded at this passage, Understand that what Zhang Xiaobo said is indeed reasonable, It is not a lie, Here I think it is necessary to give you one thing about popular science. So we have to say something digressive: The result of a real bullet hitting a petrol tank is not the same as that shown in most movies. One shot can explode the petrol tank, But this is not the case, Although a pure metal projectile will rub against the air at a speed of hundreds of meters per second to generate equivalent heat, And will produce sparks after hitting the metal oil drum, But none of this is enough to ignite petrol, Especially for gasoline with a large total amount, to ignite gasoline, please remember one thing-open flame must be used. In addition, gasoline is a flammable item, but it is not an explosive item in the true sense. Only after reaching a certain total amount can explosion be caused. If the total amount is insufficient, it can only cause combustion without explosion.众将军来到第五将校场，看见各营都排列整齐，全都面对正中高台，仿佛在专门等候他们一样，不禁诧异。Pool.add (conn);再怎么样，他比红椒山芋去黑莽原的时候要大许多，又读了这么些年书，见识也要广一些。　　《詭探前傳》是香港電視娛樂ViuTV製作的電視劇，《詭探》的前傳作品，将于2018年下半年在ViuTV首播。这部劇由鄭少秋、麥子樂、陳安立、游學修、陶大宇、江若琳、沈殷怡、郭偉亮、陳觀泰主演。用1980年代香港做背景，會講到不少中國民間傳統迷信習俗。