What is The NAT in the network

Hellow friend today we will know about the NAT that what is NAT and how to we can use it.

NAT (Network Address Translation) is a process of changing the source and destination IP addresses and ports. Addresstranslation reduces the need for IPv4 public addresses and hides private network address 

ranges. The process is usually done by routers or firewalls. So there are three types of address translation.

1(Static NAT)= translates one private IP address to a public one. The public IP address is always the same.

2(Dynamic NAT)= Private ip addresses are mapped to the pool of public IP addresses.

3(Port Address Translation PAT)= One public IP address is used for all internal devices, but a different port is assigned to each private IP address. Also known as NAT Overload. so this is all about the NAT