ZyXEL Communications P-335WT - Manual (Page 151)

P-335 Series User’s Guide
Chapter 9 Network Address Translation (NAT) Screens 151
9.5 Configuring Address Mapping
Ordering your rules is important because the Prestige applies the rules in the order that you
specify. When a rule matches the current packet, the Prestige 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 old rules 5, 6 and 7 become new rules 4, 5 and 6.
To change your Prestige’s Address Mapping settings, click SUA/NAT, then the Address
Mapping tab. The screen appears as shown.
Figure 60 Address Mapping
The following table describes the labels in this screen.
Table 47 Address Mapping
LABEL DESCRIPTION
Local Start IP This refers to the Inside Local Address (ILA), which is the starting local IP address. If
the rule is for all local IP addresses, then this field displays 0.0.0.0 as the Local Start
IP address. Local IP addresses are N/A for Server port mapping.
Local End IP This is the end Inside Local Address (ILA). If the rule is for all local IP addresses, then
this field displays 255.255.255.255 as the Local End IP address. This field is N/A for
One-to-One and Server mapping types.
Global Start IP This refers to the Inside Global IP Address (IGA). 0.0.0.0 is for a dynamic IP address
from your ISP with Many-to-One and Server mapping types.
Global End IP This is the end Inside Global Address (IGA).
This field is N/A for One-to-One, Many-to-One and Server mapping types.