iPECS SBG-1000 User Manual

iPECS SBG-1000 User Manual (DATA Features)
define which LAN IP address will be translated to which NAT IP address and/or ports.
By default, iPECS SBG-1000 operates in NAPT routing mode (refer to Section 6.4.6.4.3). However,
you can control your network translation by defining static NAT/NAPT rules. Such rules map LAN
computers to NAT IP addresses. The NAT/NAPT mechanism is useful for managing Internet
usage in your LAN, or complying with various application demands. For example, you can assign
your primary LAN computer a single NAT IP address, in order to assure its permanent connection
to the Internet. Another example is when an application server to which you would like to connect,
such as a security server, requires that packets have a specific IP address—you can define a NAT
rule for that address.
5.2.7.1 Configuring the NAT
Click the ‘NAT’ link under the ‘Firewall’ menu item. The ‘NAT’ screen appears.
Figure 5.26 Network Address Translation
Before configuring NAT/NAPT rules, you must first enter the additional public IP addresses
obtained from your ISP as your NAT IP addresses, in the ‘NAT IP Addresses Pool’ section.
Note: The primary IP address used by the WAN device for dynamic NAPT should not
be added to this table.
To add a NAT IP address, perform the following:
1. Click the ‘New IP Address’ link. The ‘Edit Item’ screen appears.
Figure 5.27 Edit Item
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