User's Manual

FIREWALL
Version 2.0, February 2012. Copyright 2012 Hitron Technologies
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HITRON CGN USER’S GUIDE
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 CGN’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.