ZyXEL Communications Prestige 1600 - Manual (Page 74)

Prestige 1600 Universal Access Concentrator
9-8 NAT
N.B.: Save Set in the Action field means to save the whole set. You must do this if you make any
changes to the set - including deleting a rule. No changes to the set take place until this action is taken.
Be careful when ordering your rules as each rule is executed in sequence beginning from rule 1.
Selecting Edit in the Action field and then entering a rule number brings up the following menu, Menu 15.1.1.1 - Address
Mapping Rule in which you can edit an individual rule and configure the Type, Local and Global Start/End IPs displayed in
Menu 15.1.1.
Figure 9-8 Editing an Individual Rule in a Set
The following table describes the fields in this screen.
Table 9-5 Menu 15.1.1.1 - configuring an individual rule
Field Description Option/Example
Type Press the [SPACEBAR] to toggle through a total of 6
types. These are the mapping types discussed above
(see Table 9-1). Type Server allows you to specify
multiple servers of different types behind NAT to this
machine. See section 9.4.3 below for some examples. One-to-One
Many-to-One
Many-to-Many Overload
One-to-One (range)
Server
No Change
Local IP Only local IP fields are N/A for server; Global IP fields
MUST be set for Server.
Start This is the starting local IP address (ILA). 0.0.0.0
End This is the ending local IP address (ILA). If the rule is
for all local IPs, then put the Start IP as 0.0.0.0 and the
End IP as 255.255.255.255. This field is N/A for One-
to-One and Server types. 255.255.255.255
Global IP
Start This is the starting global IP address (IGA). If you have
a dynamic IP, enter 0.0.0.0 as the Global IP Start. Note
that Global IP Start can be set to 0.0.0.0 only if the
types are Many-to-One or Server. 0.0.0.0
End This is the ending global IP address (IGA). This field is
N/A for One-to-One, Many-to-One and Server types. 172.16.23.55
Note: For all Local and Global IPs, the End IP address must be numerically greater than the Start IP
address.
Menu 15.1.1.1 Address Mapping Rule
Type= One-to-One
Local IP:
Start=
End = N/A
Global IP:
Start=
End = N/A
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.