ZyXEL Communications ZyXEL ZyAIR 100 - Manual (Page 132)

ZyWALL 10~100 Series Internet Security Gateway
9-10 NAT
Table 9-4 SUA/NAT Setup
LABEL DESCRIPTION
Start Port
End Port
Enter a port number here. To forward only one port, enter it again in the End Port field.
To specify a range of ports, enter the last port to be forwarded in the End Port No field
Server IP
Address Enter the inside IP address of the server here.
Apply Click Apply to save your changes back to the ZyWALL.
Reset Click Reset to begin configuring this screen afresh.
9.5 Configuring Address Mapping
Ordering your rules is important because the ZyWALL applies the rules in the order that you specify. When a
rule matches the current packet, the ZyWALL 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 ZyWALL’s Address Mapping settings, click SUA/NAT, then the Address Mapping tab.
The screen appears as shown.