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So at the moment, We're on another machine, Use the ping command to send a message to the current machine. As shown in the following figure, the ping command can be responded to, proving that the message sent by the ping command has been normally sent to the host where the firewall is located. The IP address of the machine where the ping command is located is 146, and the IP address of the host currently testing the firewall is 156. We will use this environment to demonstrate the operation of iptables.1. Notwithstanding the provisions of Sections I and II of Chapter II, any ship overtaking any other ship shall give way to the overtaking ship.4个储物柜小田雄二（Yuji Oda Yasunori Danda）2016年春天，驻村干部陈平来到豫北一个美丽的乡村，为了改变村里贫困户的窘迫现状，深切落实国家的“精准扶贫”政策，陈平深扎农村，为解决老百姓的民生问题煞费苦心。　　然而理想是丰满的，现实是骨感的，村里不同贫困户面临的困境都截然不同，有的人因家庭和生意变故酗酒成瘾，一蹶不振 ；有的人否认自己是贫困户，消极避世；有的人天性好吃懒做，丧失斗志......面对种种棘手难题，陈平陷入了思考与斗争之中......We know that computers can be used for work, study, entertainment, etc. In addition to the necessary computer hardware, software is also needed. Usually, we call a computer with only hardware but no software "bare metal", which cannot do any meaningful work. At present, software can be divided into two categories according to its use: system software and application software. System software is a program designed for computer systems to efficiently use and manage computer software and hardware resources and support the operation of application software. Such as operating systems, programming languages and language processing programs, network system software, system service programs, etc. Among them, Windows operating system is what we often use. Application software is a variety of programs that are user-oriented and written to solve practical problems. It can be written by users themselves or purchased. For example, office XP, Photoshop, Red Alert and so on, which we often use.又行了几步，赵大人渐渐换了个表情，轻声叹道：绍兴府如此繁华鼎盛之象，不是人人能享受到啊。