Figure 182 Nat Address Mapping Edit - ZyXEL Communications Internet Security Appliance ZyWALL5UTM 4.0 User Manual

Internet security appliance

Table of Contents

Table 127 NAT Address Mapping (continued)

Global Start IP This refers to the Inside Global IP Address (IGA), that is the starting global IP address.

Global End IP

22.4.1 NAT Address Mapping Edit

Click the Edit button to display the NAT Address Mapping Edit screen. Use this screen to

edit an address mapping rule.

Figure 182 NAT Address Mapping Edit

Chapter 22 Network Address Translation (NAT)

0.0.0.0 is for a dynamic IP address from your ISP with Many-to-One and Server

mapping types.

This is the ending Inside Global Address (IGA). This field is N/A for One-to-One,

Many-to-One and Server mapping types.

1. One-to-One mode maps one local IP address to one global IP address. Note that

port numbers do not change for the One-to-One NAT mapping type.

2. Many-to-One mode maps multiple local IP addresses to one global IP address.

This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL's Single User

Account feature that previous ZyXEL routers supported only.

3. Many-to-Many Overload mode maps multiple local IP addresses to shared global

IP addresses.

4. Many One-to-One mode maps each local IP address to unique global IP

5. Server allows you to specify inside servers of different services behind the NAT to

be accessible to the outside world.

Click the edit icon to go to the screen where you can edit the address mapping rule.

Click the delete icon to delete an existing address mapping rule. A window display

asking you to confirm that you want to delete the address mapping rule. Note that

subsequent address mapping rules move up by one when you take this action.

Click Insert to insert a new mapping rule before an existing one.

ZyWALL 5/35/70 Series User's Guide