Notes
PAT
What is PAT?
PAT stands for port address translation. It’s a type of dynamic NAT, but it bands several local IP addresses to a singular public one. Organizations that want all their employees’ activity to use a singular IP address use a PAT, often under the supervision of a network administrator.
How PAT works?
Each private IP + Port number is mapped to port of public IP. Example: 192.168.0.2:80 -> 1.2.3.4:10 192.168.0.5:80 -> 1.2.3.4:11 192.168.0.8:80 -> 1.2.3.4:12 192.168.0.8:85 -> 1.2.3.4:13