ZyXEL Communications ZYWALL10 User Manual
ZyWALL 10 Internet Security Gateway
6-12
NAT
The following table describes the fields in this screen.
Table 6-6 Menu 15.1.1.1 — Configuring an Individual Rule
FIELD
DESCRIPTION
EXAMPLE
Type
Press the [SPACE BAR] to toggle through a
total of five types. These are the mapping
types discussed above (see Table 6-2).
Type Server allows you to specify multiple
servers of different types behind NAT to this
machine. See section 6.4.3 below shown
next for some examples.
total of five types. These are the mapping
types discussed above (see Table 6-2).
Type Server allows you to specify multiple
servers of different types behind NAT to this
machine. See section 6.4.3 below shown
next for some examples.
One-to-One
Local IP
Only local IP fields are N/A for server;
Global IP fields MUST be set 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.
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.
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.
This field is N/A for One-to-One, Many-to-
One and Server types.
172.16.23.55
Once you have finished configuring a rule in this menu, press [ENTER] at the message
“Press ENTER to Confirm…” to save your configuration, or press [ESC] to cancel.
“Press ENTER to Confirm…” to save your configuration, or press [ESC] to cancel.
For all Local and Global IPs, the End IP address must begin after the IP Start address,
i.e., you cannot have an End IP address beginning before the Start IP address.
6.3 NAT Server Sets
A NAT server set is a list of inside servers (behind NAT on the LAN) that you can make visible to the
outside world. Menu 15.2 — NAT Server Sets is used to configure these servers. Entry 12 set to port
1026 is displayed in Figure 6-11 and is non-editable.
outside world. Menu 15.2 — NAT Server Sets is used to configure these servers. Entry 12 set to port
1026 is displayed in Figure 6-11 and is non-editable.