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B-FOCuS 270/285/400 PR
Configuration Manual
ECI Telecom Ltd. Proprietary
24
In this case, enter the number of an existing Action ID. The rule’s application
parameters are copied from the original definition. You can redefine the precedence to
apply this rule at a higher priority.
6. Click
Apply
.
To view the rules you have defined:
In the IP Filtering tab click
View Actions
. The List of Firewall Parameters dialog box
appears.
You can see the parameters common to all rules having the same Action ID.
5.4. NAPT
The Network Address Port Translation (NAPT) protocol translates IP addresses from
LAN to WAN and vice versa. This is performed for efficient use of the IP address
range and for protection of privacy. Each package contains in its header the addresses
of the source and the destination. In addition, it contains the identity of source and
destination ports. This information is required to identify the application that has
generated the data (such as: HTTP, FTP, Telnet, Yahoo Messenger).
The NAPT service is characterized by two IP addresses: one towards the WAN and
the other towards the LAN. From the WAN side, all the LAN computers reside under
the same address. When a computer in the LAN initiates access to the WAN, the
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