ZyXEL Communications ZYAIR, Руководство пользователя

Страница: 255 / 402

ZyAIR Wireless Gateway Series User’s Guide
NAT 23-7
Table 23-4 Menu 15.1.1.1 Address Mapping Rule
FIELD DESCRIPTION EXAMPLE
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.
N/A
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 .
N/A
Server
Mapping
Set
Only available when Type is set to Server . Type a number from 1 to 10 to
choose a server set from menu 15.2.
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.
Ordering Your Rules
Ordering your rules is important because the ZyAIR applies the rules in the order that you specify. When a
rule matches the current packet, the ZyAIR takes the corresponding action and the remaining rules are
ignored. If there are any empty rules before your new configured rule, your configured rule will be pushed
up by that number of empty rules. For example, if you have already configured rules 1 to 6 in your current
set and now you configure rule number 9. In the set summary screen, the new rule will be rule 7, not 9.
Now if you delete rule 4, rules 5 to 7 will be pushed up by 1 rule, so as old rule 5 becomes rule 4, old rule 6
becomes rule 5 and old rule 7 becomes rule 6.
23.3 Port Forwarding Setup - NAT Server Sets
A NAT server set is a list of inside (behind NAT on the LAN) servers, for example, web or FTP, that you
can make visible to the outside world even though NAT makes your whole inside network appear as a
single machine to the outside world.
Use Menu 15 - NAT Setup to forward incoming service requests to the server(s) on your local network.
You may enter a single port number or a range of port numbers to be forwarded, and the local IP address of
the desired server. The port number identifies a service; for example, web service is on port 80 and FTP on
port 21. In some cases, such as for unknown services or where one server can support more than one service
(for example both FTP and web service), it might be better to specify a range of port numbers.