Nmap You Requested a Scan Type Which Requires Root Privileges?
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Nmap does not require root privileges to run port scans. However, in order for Nmap to perform some of the more advanced scan types (such as OS fingerprinting and version detection), you will need root privileges. This is because these scans require sending special probes and require access to Raw IP Sockets which normal users don’t have access to.
Nmap requires root privileges on Unix-like systems in order to run certain scans. If you attempt to run a scan that requires root privileges without root privileges, you will receive an error message indicating that the scan cannot proceed. In order to run the scan, you will need to use sudo or become the root user.