ZyXEL Communications EMG5324-D10A User Manual

Chapter 10 Network Address Translation (NAT)

EMG5324-D10A User’s Guide

The following table describes the fields in this screen.

Ordering your rules is important because the Device applies the rules in the order that you specify. 
When a rule matches the current packet, the Device takes the corresponding action and the 
remaining rules are ignored. 

Click Network Setting > NAT > Address Mapping to display the following screen. 

Network Setting > NAT > Address Mapping

The following table describes the fields in this screen.

Network Setting > NAT > Sessions

MAX NAT 
Session

Use this field to set a common limit to the number of concurrent NAT sessions each client 
computer can have.

If only a few clients use peer to peer applications, you can raise this number to improve 
their performance. With heavy peer to peer application use, lower this number to ensure no 
single client uses too many of the available NAT sessions.

Apply

Click Apply to save your changes.

Cancel

Click Cancel to restore your previously saved settings.

Network Setting > NAT > Address Mapping

Add new rule

Click this to create a new rule.

Set

This is the index number of the address mapping set.

Local Start IP

This is the starting Inside Local IP Address (ILA).

Local End IP

This is the ending Inside Local IP Address (ILA). If the rule is for all local IP addresses, then 
this field displays 0.0.0.0 as the Local Start IP address and 255.255.255.255 as the Local 
End IP address. This field is blank for One-to-One mapping types.

Global Start IP

This is the starting Inside Global IP Address (IGA). Enter 0.0.0.0 here if you have a dynamic 
IP address from your ISP. You can only do this for the Many-to-One mapping type. 

Global End IP

This is the ending Inside Global IP Address (IGA). This field is blank for One-to-One and 
Many-to-One mapping types.