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/bloodThe firewall sets the SYN forwarding timeout parameter (the firewall for state detection can be set in the state table), which is much less than the timeout time of the server. When the client sends the SYN packet and the server sends the acknowledgement packet (SYN + ACK), if the firewall has not received the acknowledgement packet (ACK) from the client by the time the counter expires, it sends the RST packet to the server to cause the server to delete the half connection from the queue. It is worth noting that the setting of gateway timeout parameters should not be too small or too large. If the setting of timeout parameters is too small, it will affect normal communication. If the setting is too large, it will also affect the effect of preventing SYN attacks. This parameter must be set according to the network application environment.DoSth d1=new DoSth (Say);三个苦逼兄弟：齐冠雄、王也、史撮撮大学毕业后各自打拼事业，无奈各自都不如意，一个被炒鱿鱼、一个情场失意、一个公司被恶意收购。多年后重聚一起，同病相怜的三兄弟准备干一票打的，开始筹划以开空头影视传媒公司以幌子来忽悠社会大哥武晶钢。三人以为他们已经成功忽悠住了武晶钢，可是张翠翠认出了王也是他前男友的事实，把事情告诉了武晶钢。于是一场啼笑皆非、斗智斗勇的故事由此展开。。。这部剧讲的是一个跨越200年的纯爱故事，男主角为了守护女主角不惜挑战危险的命运。