The network address translation function translates sender and destination information of communication packets that pass through the NS Appliance.
This function enables communication with external network while hiding information internal to the data center. As a result, it is possible to strengthen network security.
The network address translation function provides the following translation functions:
Translation of sender IP addresses
Translates the sender IP address in the IP header of an outgoing packet which passes through the NS Appliance, according to a rule.
Translation of sender IP addresses and sender port numbers
Translates the sender IP address in the IP header and the sender port number in the TCP or UDP header of an outgoing packet which passes through the NS Appliance, according to a rule.
Translation of destination IP addresses
Translates the destination IP address in the IP header of an incoming packet which passes through the NS Appliance, according to a rule.
Translation of destination IP addresses and destination port numbers
Translates the destination IP address in the IP header and the destination port number in the TCP or UDP header of an incoming packet which passes through the NS Appliance, according to a rule.
How communication packets that pass through the NS Appliance are translated can be freely determined by defining a rule on the NS Appliance.
Figure 1.4 Network Address Translation Function Overview
