A Nat Example - D-Link DFL-1660 User Manual

7.2. NAT
3. The recipient server then processes the packet and sends its response.
4. NetDefendOS receives the packet and compares it to its list of open connections. Once it finds
the connection in question, it restores the original address and forwards the packet.
5. The original sender now receives the response.
The sequence of these events is illustrated further in the diagram below.
Example 7.1. Specifying a NAT Rule
To following will add a NAT rule that will perform address translation for all HTTP traffic originating from the
internal network lan as it flows out to the public Internet on the wan interface. The IP address of the wan interface
will be used as the NATing address for all connections.
Command-Line Interface
First, change the current category to be the main IP rule set:
gw-world:/> cc IPRuleSet main
Now, create the IP rule:
gw-world:/main> add IPRule Action=NAT
Return to the top level:
195.55.66.77:80 => 195.11.22.33:32789
195.55.66.77:80 => 192.168.1.5:1038
Figure 7.2. A NAT Example
SourceInterface=lan
SourceNetwork=lannet
DestinationInterface=wan
DestinationNetwork=all-nets
Service=http
Name=NAT_HTTP
NATAction=UseInterfaceAddress
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Chapter 7. Address Translation