Version 1.1, 08/2013. Copyright

2013 Hitron Technologies

86

Hitron CGN3 User’s Guide

6.6

Device Reset Screen

Use this screen to reboot your CGN3, or to return it to its factory default settings.

Click

Admin

>

Device Reset

. The following screen displays.

Figure 35:

The Admin: Device Reset Screen

SNTP Function

Use this field to select whether the

SNTP Function

be

active or not.



Select

Enabled

to activate the SNTP Function.



Select

Disabled

to deactivate the SNTP Function.

NOTE:

The Simple Network Time Protocol (SNTP)

is

an adaptation of the Network Time Protocol

(NTP) used to

synchronize computer clocks in

the Internet.

Time Zone

Use this fields to select the time zome when the SNTP

Function

enabled

.

Assign SNTP Server

Enter the

SNTP Server

you want to assign manually.

Daylight Function

Use this field to select whether the

Daylight Function

be

active or not.



Select

Enabled

to activate the Daylight Function.



Select

Disabled

to deactivate the Daylight Function.

Daylight Time

Enter the duration of the daylight time.

Table 32:

The Admin: Time Setting Screen (continued)

Version 1.1, 08/2013. Copyright

2013 Hitron Technologies

87

Hitron CGN3 User’s Guide

The following table describes the labels in this screen.

Table 33:

The Admin: Device Reset Screen

Reboot Device

Click

Reboot

to restart your CGN3.

Restore Factory Default

Settings

Click

Factory Reset

to return your CGN3 to its factory

default settings.

When you do this, all your user-configured settings are

lost, and cannot be retrieved.

Help

Click this to see information about the fields in this screen.

Version 1.1, 08/2013. Copyright

2013 Hitron Technologies

88

Hitron CGN3 User’s Guide

7

Security

This chapter describes the screens that display when you click

Security

in the

toolbar. It contains the following sections:



Security Overview

on page

88



The Firewall Screen

on page

90



The Service Filter Screen

on page

92



The Device Filter Screen

on page

97



The Keyword Filter Screen

on page

101



The Logs Screen

on page

103



The VPN Pass-Through Screen

on page

104

7.1

Security Overview

This section describes some of the concepts related to the

Security

screens.

7.1.1

Firewall

The term “firewall” comes from a construction technique designed to prevent the

spread of fire from one room to another. Similarly, your CGN3’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.

Version 1.1, 08/2013. Copyright

2013 Hitron Technologies

89

Hitron CGN3 User’s Guide

7.1.2

Intrusion detection system

An intrusion detection system monitors network activity, looking for policy violations,

and malicious or suspicious activity. The CGN3’s intrusion detection system logs all

such activity to the

Security

>

Logs

screen.

7.1.3

Device Filtering

Every networking device has a unique Media Access Control (MAC) address that

uniquely identifies it on the network. When you enable MAC address filtering on the

CGN3’s firewall, you can set up a list of devices, identified by their MAC addresses,

and then specify whether you want to:



Deny the devices on the list access to the CGN3 and the network (in which case

all other devices can access the network)

or



Allow the devices on the list to access the network (in which case no other

devices can access the network).

7.1.4

Service Filtering

Service filtering is a way of preventing users on the LAN from connecting with devices

on the WAN via specific services, protocols or applications. It achieves this by

permitting or denying traffic from the LAN to pass to the WAN, based on the target

port.

7.1.5

VPN

A virtual private network (VPN) extends a private network across a public network,

such as the Internet. It enables a computer to send and receive data across shared or

public networks as if it were directly connected to the private network, while

benefitting from the functionality, security and management policies of the private

network. This is done by establishing a virtual point-to-point connection through the

use of dedicated connections, encryption, or a combination of the two.

Version 1.1, 08/2013. Copyright

2013 Hitron Technologies

90

Hitron CGN3 User’s Guide

7.2

The Firewall Screen

Use this screen to turn firewall features on or off and to allow or permit certain

applications and protocols. You can select the level of firewall protection from pre-

defined options, or create a custom protection profile.

NOTE:

To block specific ports, use the Service Filter screen (see

The Service Filter

Screen

on page

92

).

Click

Security

>

Firewall

. The following screen displays.

Figure 36:

The Security: Firewall Screen