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In the http protocol, the http header has a continuous "\ r\ n\ r\ n" as the end flag, and many web servers will wait for the header transmission to end before processing the http requested mop information. Therefore, if the web server does not receive a continuous "\ r\ n\ r\ n", it will always receive the data and maintain the connection with the client.We know that IPTables acts according to rules. Let's talk about rules. Rules are actually predefined conditions for network administrators. Rules are generally defined as "if the packet header meets such conditions, this packet will be processed in this way". The rules are stored in the packet filtering table in kernel space, specifying the source address, destination address, transport protocol (such as TCP, UDP, ICMP), service type (such as HTTP, FTP, and SMTP), and so on. When packets match the rule, iptables processes these packets according to the methods defined by the rule, such as accept, reject and drop. The main task of configuring a firewall is to add, modify, and delete these rules.王小羽音乐考试挂科后躲在家里吃瓜追剧，却意外乱入剧中。通过随身带来的沙发和遥控器，一边无意打乱剧情，一边努力修正，最终与剧中角色建立了深厚的感情，最后发挥所学，通过音乐帮剧中角色赢得比赛，实现自我成长。我爹我娘啥时候能到哩？这路又不算远，连板栗和小葱从西南那么远的地方都赶到了，咋他们还没到？秦枫忍笑道：你爹娘和哥哥嫂子说，来京城过年，什么东西都要买，家里什么都是现成的。It should be noted that if the special inventory code item is "K" consignment inventory, the supplier code will be displayed; If it is "E" sales order inventory, the sales order number will be displayed.豪杰本色浩气如虹4. (1) Motor boats less than 12m in length may display a ring-illuminated white light and a side light in place of the light specified in paragraph 1 of this Article;