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Configuring NAT
62 EN/LZT 108 6492 R2 - October 2003
would typically be used for load balancing, whereby traffic is
distributed among several redundant servers.
7. In the “Global Address From/To:” fields, type the public IP address
assigned to you by your ISP.
If you have multiple WAN interfaces, in both fields type the IP
address of the interface to which this rule applies. This rule will not
be enforced for data that arrives on WAN interfaces not specified
here.
If you have multiple WAN interfaces and want the rule to be
enforced on a range of them, type the starting and ending IP
addresses of the range.
8. Enter a destination port ID (or a range) as criteria for incoming
traffic.
Enter a starting and ending port number in the “Destination Port
From/To:” fields if incoming traffic destined for these port types
should be redirected to the address(es) specified in step 6. Or, enter
the same address in both fields.
9. If the publicly accessible LAN computer uses a non-standard port
number for the type of traffic it receives, type the non-standard port
number in the “Local Port:” field.
10. When you have completed entering all information, click the Submit
button. A page appears to confirm the changes.
11. Click Close to return to the NAT Configuration page. The new rule
should no be displayed in the NAT Rule table.
12. On the NAT Configuration page, ensure that the Enable radio
button is selected and then click the Submit button. A page appears
to confirm your changes.
13. Select Admin > Commit & Reboot and click the Commit button to
save your changes to permanent storage.
8.5.3 The BASIC Rule
The BASIC flavor translates the private (LAN-side) IP address to a public
(WAN-side) IP address, like the NAPT rule. However, unlike the NAPT rule,
the BASIC rule does not translate the port number in the packet header;
they are passed through untranslated. Therefore, the BASIC rule does not
provide the same level of security as the NAPT rule.
To create a RDR rule, proceed as follows: