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11-6
NAT
Table 11-2 NAT Mapping Types
TYPE
IP MAPPING
SMT ABBREVIATION
Many-One-to-One
ILA1
ÅÆ
IGA1
ILA2
ÅÆ
IGA2
ILA3
ÅÆ
IGA3
…
M-1-1
Server
Server 1 IP
ÅÆ
IGA1
Server 2 IP
ÅÆ
IGA1
Server 3 IP
ÅÆ
IGA1
Server
11.2 SUA (Single User Account) Versus NAT
SUA (Single User Account) is a ZyXEL implementation of a subset of NAT that supports two types of
mapping,
Many-to-One
and
Server
. See section
11.3.1
for a detailed description of the NAT set for
SUA. The Prestige supports
Full Feature
NAT to map multiple global IP addresses to multiple private
LAN IP addresses of clients or servers using mapping types as outlined in
Table 11-2
.
1. Choose
SUA Only
if you have just one public WAN IP address for your
Prestige.
2. Choose
Full Feature
if you have multiple public WAN IP addresses for your
Prestige.
11.2.1 Applying NAT
You apply NAT via menus 4 or 11.3 as displayed next. The next figure shows you how to apply NAT for
Internet access in menu 4. Enter 4 from the main menu to go to
Menu 4 - Internet Access Setup
.
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Prestige 324 Intelligent Broadband Sharing Gateway
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11-7
Figure 11-3 Menu 4 — Applying NAT for Internet Access
The following figure shows how you apply NAT to the remote node in menu 11.1.
Step 1.
Enter 11 from the main menu.
Step 2.
Move the cursor to the
Edit IP
field, press the [SPACE BAR] to select
Yes
and then press
Step 3.
[ENTER] to bring up
Menu 11.3 - Remote Node Network Layer Options.
Menu 4 - Internet Access Setup
ISP's Name= myISP
Encapsulation= Ethernet
Service Type= Standard
My Login= N/A
My Password= N/A
Login Server IP= N/A
IP Address Assignment= Dynamic
IP Address= N/A
IP Subnet Mask= N/A
Gateway IP Address= N/A
Network Address Translation= SUA Only
Press ENTER to Confirm or ESC to Cancel:
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11-8
NAT
Figure 11-4 Menu 11.3 — Applying NAT to the Remote Node
The following table describes the options for Network Address Translation.
Table 11-3 Applying NAT in Menus 4 & 11.3
FIELD
OPTIONS
DESCRIPTION
Full
Feature
When you select this option the SMT will use Address Mapping Set 1
(menu 15.1 - see
section
11.3.1
for further discussion). You can
configure any of the mapping types described in
Table 11-2
. Choose
Full Feature
if you have multiple public WAN IP addresses for your
Prestige.
None
NAT is disabled when you select this option.
Network
Address
Translation
SUA Only
When you select this option the SMT will use Address Mapping Set 255
(menu 15.1 - see section
11.3.1
). Choose
SUA Only
if you have just one
public WAN IP address for your Prestige.
11.3 NAT Setup
Use the Address Mapping Sets menus and submenus to create the mapping table used to assign global
addresses to computers on the LAN. You can see two NAT Address Mapping sets in menu 15.1. You can
only configure
Set 1
.
Set 255
is used for SUA. When you select
Full Feature
in menu 4 or 11.3, the SMT
Menu 11.3 - Remote Node Network Layer Options
IP Address Assignment= Dynamic
IP Address: N/A
IP Subnet Mask= N/A
Gateway IP Addr= N/A
Network Address Translation= Full Feature
Metric= 1
Private= No
RIP Direction= None
Version= N/A
Multicast= None
Enter here to CONFIRM or ESC to CANCEL:
Press Space Bar to Toggle.
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Prestige 324 Intelligent Broadband Sharing Gateway
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11-9
will use
Set 1
, which supports all mapping types as outlined in
Table 11-2.
When you select
SUA Only
,
the SMT will use the pre-configured
Set 255
(read only).
The Server Set is a list of LAN side servers mapped to external ports. To use this set (one set for the
Prestige 10), a server rule must be set up inside the NAT Address Mapping set. To configure NAT, enter 15
from the main menu to bring up the following screen.
Figure 11-5 Menu 15 — NAT Setup
11.3.1 Address Mapping Sets
Enter 1 to bring up
Menu 15.1 — Address Mapping Sets
.
Figure 11-6 Menu 15.1 — Address Mapping Sets
SUA Address Mapping Set
Enter 255 to display the next screen (see also
section 11.2)
. The fields in this menu cannot be changed.
Menu 15 — NAT Setup
1.
Address Mapping Sets
2.
Port Forwarding Setup
3.
Trigger Port Setup
Enter Menu Selection Number:
Menu 15.1 — Address Mapping Sets
1.
255. SUA (read only)
Enter Menu Selection Number:
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11-10
NAT
Figure 11-7 Menu 15.1.255 — SUA Address Mapping Rules
The following table explains the fields in this screen.
The fields in menu 15.1.255 are read-only.
Table 11-4 SUA Address Mapping Rules
FIELD
DESCRIPTION
EXAMPLE
Set Name
This is the name of the set you selected in menu
15.1 or enter the name of a new set you want to
create.
SUA
Idx
This is the index or rule number.
1
Local Start IP
Local End IP
Local Start IP
is the starting local IP address (ILA)
(see
Figure 11-1)
.
Local End IP
is the ending
local IP address (ILA). If the rule is for all local IPs,
then the Start IP is 0.0.0.0 and the End IP is
255.255.255.255.
0.0.0.0
255.255.255.255
Local Start IP
Local End IP
Local Start IP
is the starting local IP address (ILA)
(see
Figure 11-1)
.
Local End IP
is the ending
local IP address (ILA). If the rule is for all local IPs,
then the Start IP is 0.0.0.0 and the End IP is
255.255.255.255.
0.0.0.0
255.255.255.255
Menu 15.1.255 - Address Mapping Rules
Set Name= SUA
Idx Local Start IP
Local End IP
Global Start IP Global End IP
Type
--- --------------- --------------- --------------- --------------- ------
1. 0.0.0.0
255.255.255.255 0.0.0.0
M-1
2.
0.0.0.0
Server
3.
4.
5.
6.
7.
8.
9.
10.
Press ENTER to Confirm or ESC to Cancel:
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