Firewall; Firewall Overview; Intrusion Detection System; Ping - Hitron CGNV2 User Manual

This chapter describes the screens that display when you click Firewall in the
toolbar.
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 CGNV2'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.
4.1.2

INTRUSION DETECTION SYSTEM

An intrusion detection system monitors network activity, looking for policy violations,
and malicious or suspicious activity.
4.1.3

PING

The CGNV2 allows you to use the ping utility on the LAN (in the LAN > Debug
screen) and also on the WAN (in the Firewall > Firewall Options screen). For more
information, see Debugging (Ping and Traceroute)
4.1.4

MAC FILTERING

Every networking device has a unique Media Access Control (MAC) address that
identifies it on the network. When you enable MAC address filtering on the CGNV2's
firewall, you can set up a list of MAC addresses, and then specify whether you want
to:
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