Utility When you are handling large computer networks, you probably need an automated IP scanner application to check whether hosts are alive or not because it is tiring to ping or perform any types of checking one by one. If not, you are a penetration tester (pentester) or hacker who needs to scan a wide network. If you need to learn the basic concepts, go to my article Introduction to Simple Computer Network and Introduction to Simple Penetration Testing . GUI Angry IP Scanner If you are still inexperienced or just prefer convenience, I recommend using graphical user interface (GUI) Angry IP scanner available on Windows, Linux, and MacOS . All you need to do is input the ip range and start scanning for alive hosts. NMAP command line If you prefer command line, you can try net mapper (NMAP) . Here on Linux, I typed "nmap --help" to see command options. In Linux I used "nmap -sn [ip address][subnet id]" to scan a w
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