what is port
Firstly there is a thing named as IP Address which means that which computer on
a network to send the data coming from the other computer network.
Every Computer/device has a 16 bit port number. which means there are 65536
ports present in a computer.
0-48000 port numbers are booked already by system, some classical softwares
like mongodb, express and more and some for some specific companies.
Port Numbers after 48000 you can use.