Introduction - If you have any usage issues, please Google them yourself
NAT through the Design and Implementation of Module, NAT a public network address and network address mappings between, can be summed up in two ways: (1) within the network when the IP packets through NAT, when the need for inflow of the public network, NAT this IP packet' s source IP address and port on the interface changed to NAT a public network address and port (2) When the public IP network packets through NAT need access to resources within the network, NAT to IP packet destination address changed within the network and port IP address and port