ZyXEL Communications P-793H User Manual

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 Chapter 28 NAT Setup
P-793H User’s Guide
283
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The Type, Local and Global Start/End IPs are configured in menu 15.1.1.1 
(described later) and the values are displayed here.
Ordering your rules is important because the ZyXEL Device applies the rules in the order that 
you specify. When a rule matches the current packet, the ZyXEL Device 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. 
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You must press [ENTER] at the bottom of the screen to save the whole set. 
You must do this again if you make any changes to the set – including deleting 
a rule. No changes to the set take place until this action is taken. 
Selecting Edit in the Action field and then selecting a rule brings up the following menu, 
Menu 15.1.1.1
 
- Address Mapping Rule in which you can edit an individual rule and 
configure the TypeLocal and Global Start/End IPs.
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An IP End address must be numerically greater than its corresponding IP Start 
address.
Table 111   Menu 15.1.1: Address Mapping Rules
FIELD
DESCRIPTION
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.
Idx
This is the index or rule number.
Local Start IP
Local Start IP is the starting local IP address (ILA).
Local End IP
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.
Global Start 
IP
This is the starting global IP address (IGA). If you have a dynamic IP, enter 0.0.0.0 as 
the Global Start IP.
Global End IP This is the ending global IP address (IGA).
Type
These are the mapping types discussed above. Server allows us to specify multiple 
servers of different types behind NAT to this machine. See later for some examples.
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.