Chapter 17 Network Address Translation (NAT)

 

Table 116 ADVANCED > NAT > Address Mapping (continued)

 

LABEL

DESCRIPTION

 

Local Start IP

This refers to the Inside Local Address (ILA), which is the starting local IP address. If

 

 

the rule is for all local IP addresses, then this field displays 0.0.0.0 as the Local Start

 

 

IP address. Local IP addresses are N/A for Server port mapping.

 

 

 

 

Local End IP

This is the end Inside Local Address (ILA). If the rule is for all local IP addresses, then

 

 

this field displays 255.255.255.255 as the Local End IP address. This field is N/A for

 

 

One-to-One and Server mapping types.

 

 

 

 

Global Start IP

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

 

 

address. 0.0.0.0 is for a dynamic IP address from your ISP with Many-to-Oneand

 

 

Server mapping types.

 

 

 

 

Global End IP

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

 

 

Many-to-One and Server mapping types.

 

 

 

 

Type

1. One-to-Onemode 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-Onemode 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-Onemode maps each local IP address to unique global IP

 

 

addresses.

 

 

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

 

 

be accessible to the outside world.

 

 

 

 

Modify

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.

 

 

 

 

Insert

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

 

 

 

17.4.2 NAT Address Mapping Edit

Click the edit icon to display the NAT Address Mapping Edit screen. Use this screen to edit an address mapping rule. See Section 17.1 on page 385 for information on NAT and address mapping.

Figure 246 ADVANCED > NAT > Address Mapping > Edit

 

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