Hitron CGNVM, Руководство пользователя

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SECURITY
Version 1.0, 02/2015. Copyright 2012 Hitron Technologies
102 Version 1.0, 02/2015. Copyright 2014 Hitron Technologies 102
Hitron CGNVM User’s Guide
6
Security
This chapter describes the screens that display when you click Security in the
toolbar. It contains the following sections:

Security Overview on page 102

The Security: Firewall Screen on page 103

The Security: Service Filter Screen on page 105

The Security: Device Filter Screen on page 111

The Security: Keyword Filter Screen on page 115
6.1 Security Overview
This section describes some of the concepts related to the Security screens.
6.1.1 Firewall
The term “firewall” comes from a construction technique designed to prevent the
spread of fire from one room to another. Similarly, your CGNVM’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.