![]() ![]() The five open ports run Windows-specific services.A total of 995 ports are in a closed state.Even with a simple Nmap scan, we can find plenty of relevant information about this target machine: TIP: Nmap will scan the most commonly used 1000 TCP/IP ports on a machine by default.Īs you can see in Figure 1.1 above, the Nmap single target scan for IP 172.16.121.128 detected five open ports out of 1000 ports scanned. The Nmap command output shows the status of the ports scanned as seen in Table 1.1 below: PORT The Nmap command output will generate a long list of parameters (switches) that Nmap supports, classified as Target Specification, Host Discovery, Scan Techniques, Port Specification, and Scan Order, Service/Version Detection, Script Scan, OS Detection, Timing and Performance, Firewall/IDS Evasion and Spoofing, Output, so on.įigure 1.2: Example of a single target scan To see all the parameters and options supported by Nmap, open a terminal and type: nmapĪlternatively, you can type the following command: nmap – help Without further ado, let’s get our hands dirty. If you don’t have Nmap installed on your machine yet, here is a step-by-step guide on installing Nmap on Windows, macOS, Linux, and FreeBSD. In this guide, I am using Kali Linux 2021, but you can install and run Nmap with success on virtually any operating system out there. If you are new to Nmap, this is the place to start! In this practical Nmap guide, we will learn how to use some of the basic Nmap commands to scan for vulnerabilities in a network. ![]()
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