Version 2.0, February 2012. Copyright 2012 Hitron Technologies
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4
FIREWALL
This chapter describes the screens that display when you click Firewall in the
toolbar. It contains the following sections:
Firewall Overview on page 54
The Firewall Options Screen on page 56
The Filter Setting Screen on page 57
The Forwarding Screen on page 65
The Port Triggering Screen on page 69
The DMZ Screen on page 72
4.1 FIREWALL OVERVIEW
This section describes some of the concepts related to the Firewall screens.
4.1.1 FIREWALL
The term “firewall” comes from a construction technique designed to prevent the
spread of fire from one room to another. Similarly, your CGN2’s firewall prevents
intrusion attempts and other undesirable activity originating from the WAN, keeping
the computers on your LAN safe. You can also use filtering techniques to specify the
computers and other devices you want to allow on the LAN, and prevent certain traffic
from going from the LAN to the WAN.
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