Publication Date: 2017-03-01 | Views: 772 | Downloads: 0 | Author: SU1002255490 | Document ID: EKB1000531520
NAT filtering allows an NAT device to filter the traffic from a public network to a private network.
NAT mapping enables the IP addresses of group of hosts on a private network to be mapped to the same public IP address using the NAT table.
If the NAT filtering mode is set to endpoint-independent: nat filter-mode endpoint-independent, the system uses: “destination IP address +destination port number + protocol number” to search the mapping table. If a corresponding entry is found, the system generates a reverse mapping entry. The destination address and port in the entry are the IP address and port number on the internal network.
When you enable NAT mapping on a public network, all the hosts from the private network share the same public IP address.
If NAT mapping mode is set to endpoing-independent: nat mapping-mode endpoint-independent, the NAT uses the same IP address and port mapping for packets sent from the same private IP address and port to any public IP address and port.