ZyXEL Communications Broadband Security Gateway P-312 - Manual (Page 79)

P312 Broadband Security Gateway
6-6 NAT
Table 6-3 Applying NAT in Menus 4 & 11.3
Field Options Description
Full Feature When you select this option the SMT will use
Address Mapping Set 1 (Menu 15.1 – see section
6.2.3 for further discussion). You can configure any
of the 5 mapping types described in Table 6-2.
None NAT is disabled when you select this option.
Network
Address
Translation
SUA Only When you select this option the SMT will use
Address Mapping Set 255 (Menu 15.1 – see section
6.2.3). It is a convenient, pre-configured, read only
Many-to-1 port mapping set, sufficient for most
purposes and helpful to people already familiar with
SUA in previous ZyNOS versions. Note that there is
also a Server type whose IGA is 0.0.0.0 in this set.
6.2.2 Configuring NAT
To configure NAT, enter 15 from the Main Menu to bring up the following screen.
Figure 6-5 Menu 15 NAT Setup
6.2.3 Address Mapping Sets and NAT Server Sets:
Use the Address Mapping Sets menus and submenus to create the mapping table used to assign global
addresses to machines on the LAN. Each remote node must specify which NAT Address Mapping Set to
use. The Prestige has one remote node and so allows you to configure only 1 NAT Address Mapping Set.
You can see two NAT Address Mapping sets in Menu 15.1. You can only configure Set 1. Set 255 is used
for SUA. When you select Full Feature in menu 4 or 11.3, the SMT will use Set 1, which supports all
mapping types as outlined in Table 6-2. When you select SUA Only, the SMT will use the pre-configured
Set 255 (read only) – see section 6.1.4.
The NAT Server set is a list of LAN side servers mapped to external ports. To use this set (one set for the
Prestige), a server rule must be set up inside the NAT Address Mapping set. Please see section 6.3 for
further information on these menus.
Enter 1 to bring up Menu 15.1 – Address Mapping Sets.
Menu 15 – NAT Setup
1. Address Mapping Sets
2. NAT Server Setup
Enter Menu Selection Number: