The Pass Rule: Allowing Specific Addresses To Pass Through Un-Translated; Figure 8-11 Nat Rule: Add (Pass Flavor) - ZyXEL Communications Prestige 623 series User Manual

After making the changes, click Submit to confirm your changes. Refer to the section on Committing Your
Changes and Rebooting the Prestige to save your changes to permanent memory and make your changes
take effect.
8.6.6 The pass rule: Allowing specific addresses to pass through un-
translated
You can create a pass rule to allow a range of IP addresses to remain un-translated when another rule would
otherwise do so.
The pass rule must be assigned a rule ID that is a lower number than the ID assigned to the rule it is
intended to pass. In you want a specific IP address or range of addresses to not be subject to an existing
rule, say rule ID #5, then you can create a pass rule with ID #1 through 4.
To add a pass rule, follow these instructions:
Step 1. In the NAT Rule – Add page, type a Rule ID, and select Pass from the Rule Flavor drop-
down list menu.
Step 2. Select the interface and, if desired, a protocol that this rule applies to.
Step 3.
In the Local Address From and Local Address To fields, type the lowest and highest IP
addresses that define the range of private address you want to be passed without translation.
If you want the pass rule to act on only one address, type that address in both fields.
After making the changes, click Submit to confirm your changes. Refer to the section on Committing Your
Changes and Rebooting the Prestige to save your changes to permanent memory and make your changes
take effect.
Configuring Network Address Translation

Figure 8-11 NAT Rule: Add (PASS flavor)

Prestige 623 Series Dual-link ADSL Router
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