How to scan UDP port using NMAP?

As we know that Every computer or device which using internet has unique number known as IP Address. IP Address contain number of TCP and UDP port to do communication. In each IP Address (16 bit) contain 0 to 65535 TCP port and 0 to 65535 UDP port. Every port work on specific service.

Here we do scan on UDP port. UDP port will be use for UDP connections means connections are unsecure as well as less reliable.

For UDP port scan we use -sU command.

here we can see that there are several port available which are closed UDP port. This scanning also give information about service of specific port.

Example: 80/udp closed http

80 - Port Number

udp - Port Type

closed - Status

http - Port service and this port use for HTTP (Hyper Text Transfer Protocol)