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Winter sports in which people use ice skates to skate on ice. Originated in Holland in the 10th century. Skating sports include speed skating, short track speed skating, and figure skating.One thing to remind is that it is best to buy raw eggs in the import supermarket. In addition, the water in the pan is best boiled once and then cooled to 65 degrees before cooking at low temperature.香荽笑眯眯地说道：大哥大嫂那是奇缘，可遇不可求。Netfilx宣布将为月初被砍的《超感猎杀》制作两小时最终篇！Wolfgang的命运及更多大坑终于要填上啦！剧集制作人拉娜·沃卓斯基在致Sense8家族的一封信中感谢全球粉丝，表示大结局正在制作中，将于明年上线！我们是历经生死的好兄弟。陈老爷可难受了。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.