The command "nmap -pU" is used to perform a UDP port scan using the Nmap (Network Mapper) tool. The "-pU" option specifies that only UDP ports should be scanned.
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nmap -sU -pU:123 192.168.0.111
here -sU specifies a UPD scan and -pU specifies a UDP port 123(NTP server port) and last we have the IP address of the target which in my case is my local computer
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