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Table 7-4 SUA/NAT Setup
LABEL
Default Server
In addition to the servers for specified services, NAT supports a default server. A
default server receives packets from ports that are not specified in this screen. If you do
not assign a default server IP address, then all packets received for ports not specified
in this screen will be discarded.
#
Number of an individual SUA server entry.
Active
Select this check box to enable the SUA server entry. Clear this checkbox to disallow
forwarding of these ports to an inside server without having to delete the entry.
Name
Enter a name to identify this port-forwarding rule.
Start 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
End Port
Server IP
Enter the inside IP address of the server here.
Address
Apply
Click Apply to save your changes back to the Contivity 221.
Reset
Click Reset to begin configuring this screen afresh.
Configuring Address Mapping
7.5
Ordering your rules is important because the Contivity 221 applies the rules in the order that you
specify. When a rule matches the current packet, the Contivity 221 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 Contivity 221's Address Mapping settings, click SUA/NAT, then the Address
Mapping tab. The screen appears as shown.
DESCRIPTION
Contivity 221 VPN Switch User's Guide
NAT 7-9
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