P312 Broadband Security Gateway

 

Table 6-3

Applying NAT in Menus 4 & 11.3

Field

Options

 

Description

 

 

 

 

Network

Full Feature

 

When you select this option the SMT will use

Address

 

 

Address Mapping Set 1 (Menu 15.1 – see section

Translation

 

 

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.

 

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.

Menu 15 – NAT Setup

1.Address Mapping Sets

2.NAT Server Setup

Enter Menu Selection Number:

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.

6-6

NAT

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ZyXEL Communications P-312 manual Configuring NAT, Address Mapping Sets and NAT Server Sets, Applying NAT in Menus 4