Adding Nat Rules; The Napt Rule: Translating Between Private And Public Ip Addresses - SMC Networks ADSL Barricade SMC7204BRA User Manual

Configuring Network Address Translation

Adding NAT Rules

This section explains how to create rules for each NAT flavor.
Note:
The NAPT rule: Translating between private and public
IP addresses
Follow these instructions to create a rule for translating the private
IP addresses on your LAN to your public IP addresses. This
type of rule uses the NAT flavor NAPT, which was used in your
default configuration. The NAPT flavor translates private source
IP addresses to a single public IP address. The NAPT rule also
translates the source port numbers to port numbers that are defined
on the [NAT Global Configuration] page (see Viewing NAT
Global Settings and Statistics on page 59). The Introduction
to NAT describes how the NAPT rule works.
1. Click the [NAT] tab, then select [NAT Rule Entry] from
the [NAT Options] drop-down list. The [NAT Rule Entry]
page displays a row for each currently configured NAT rule.
2. Click [Add] to display the [NAT Rule – Add] page.
3. From the [Rule Flavor:] drop-down list, select [NAPT]. The
page reappears with only those fields that are appropriate
for the NAPT rule flavor, as shown in Figure 22.
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You cannot edit existing NAT rules. To change a rule
setup, delete it and add a new rule with the modified
settings.