Open Ports Scanning
The following command is used to perform a TCP connect scan on the target IP address and only show the ports that are open or listening for incoming connections. When you run this command, Nmap will scan all 65,535 TCP ports on the target IP address using a TCP connect scan, which is the most reliable way to determine if a port is open or closed.
Command :
nmap --open <target>
Output :
15 Most Useful Host Scanning Commands – Kali Linux
Scanning and identifying live hosts on a network is one of the crucial activities for an ethical hacker or expert. One of the powerful tools in Kali Linux, a popular penetration testing distribution, is Nmap which has a variety of host scanning techniques. To gather valuable information about targets, detect vulnerabilities, and ultimately secure systems and networks, one needs these scanning commands. Mastering these commands would not only provide beginners with basic knowledge for doing their network reconnaissance effectively but would also help professionals conduct better security assessments on networks.