STATUS

Version 2.0, 07/2015. Copyright

2015 Hitron Technologies

24

Hitron CGNM/ CGNM-3552 User’s Guide

3.8

The MoCA Screen

Use this screen to view general information about the CGNM/ CGNM-3552’s MoCA-

related settings. You can modify many of the fields in this screen using the

Basic

>

MoCA

screen;

see

The MoCA Screen

on page

72

Click

Status

>

MoCA

. The following screen displays.

Figure 21:

The Status: MoCA Information Screen

The following table describes the labels in this screen.

Table 16:

The Status: MoCA Information Screen

Bridge Name

This displays the name of this CGNM/ CGNM-3552 in

your MoCA network. Each CGNM/ CGNM-3552

receives an individual, unique bridge name.

Firmware Version

This displays the version number of the firmware

currently running on your CGNM/ CGNM-3552’s MoCA

module

IP Address

This displays the IP address of the CGNM/ CGNM-

3552’s MoCA module, which is visible to devices

accessing the CGNM/ CGNM-3552 via the Ethernet

ports.

STATUS

Version 2.0, 07/2015. Copyright

2015 Hitron Technologies

25

Hitron CGNM/ CGNM-3552 User’s Guide

MAC Address

This displays the MAC address of the CGNM/ CGNM-

3552’s MoCA module, which is visible to devices

accessing the CGNM/ CGNM-3552 via the Ethernet

ports.

Coax TX

This displays the transmission (TX) power of the CGNM/

CGNM-3552 on the cable network, from

0

(extremely

weak) to

10

(extremely strong).

Coax RX

This displays the strength of the signal that the CGNM/

CGNM-3552 is receiving (RX) on the cable network,

from

0

(extremely weak) to

10

(extremely strong).

Channel

This displays the radio frequency (RF) channel on which

the CGNM/ CGNM-3552 is transmitting and receiving

over the cable network.

The channel number displays, followed by the channel’s

frequency in MHz.

Link Status

This displays whether or not the CGNM/ CGNM-3552 is

connected over the cable network.

Network Security

This displays the type of security that the cable network

is using (56-bit DES or 128-bit AES).

BASIC

Version 2.0, 07/2015. Copyright

2015 Hitron Technologies

1

Hitron CGNM/ CGNM-3552 User’s Guide

4

Basic

This chapter describes the screens that display when you click

Basic

in the toolbar. It

contains the following sections:



Basic Overview

on page

1



The LAN Setup Screen

on page

3



The Gateway Function Screen

on page

6



The Port Forwarding Screen

on page

7



The Port Triggering Screen

on page

11



The DMZ Screen

on page

14



The DNS Screen

on page

16



The MoCA Screen

on page

17

4.1

Basic Overview

This section describes some of the concepts related to the

Basic

screens.

4.1.1

WAN and LAN

A Local Area Network (LAN) is a network of computers and other devices that usually

occupies a small physical area (a single building, for example). Your CGNM/ CGNM-

3552’s LAN consists of all the computers and other networking devices connected to

the

LAN 1

~

4

ports. This is your private network (in routing mode - see

Routing Mode

on page

6

).

BASIC

Version 2.0, 07/2015. Copyright

2015 Hitron Technologies

2

Hitron CGNM/ CGNM-3552 User’s Guide

The LAN is a separate network from the Wide Area Network (WAN). In the case of

the CGNM/ CGNM-3552, the WAN refers to all computers and other devices

available on the cable connection.

By default, computers on the WAN cannot identify individual computers on the LAN;

they can see only the CGNM/ CGNM-3552. The CGNM/ CGNM-3552 handles

routing to and from individual computers on the LAN.

4.1.2

LAN IP Addresses and Subnets

IP addresses on the LAN are controlled either by the CGNM/ CGNM-3552’s built-in

DHCP server (see

The LAN Setup Screen

on page

51

), or by you (when you

manually assign IP addresses to your computers).

For more information about IP addresses and subnets in general, see

The LAN Setup

Screen

on page

51

.

4.1.3

DNS and Domain Suffix

A domain is a location on a network, for instance

example.com

. On the Internet,

domain names are mapped to the IP addresses to which they should refer by the

Domain Name System. This allows you to enter “www.example.com” into your

browser and reach the correct place on the Internet even if the IP address of the

website’s server has changed.

Similarly, the CGNM/ CGNM-3552 allows you to define a

Domain Suffix

to the LAN.

When you enter the domain suffix into your browser, you can reach the CGNM/

CGNM-3552 no matter what IP address it has on the LAN.

4.1.4

Debugging (Ping and Traceroute)

The CGNM/ CGNM-3552 provides a couple of tools to allow you to perform network

diagnostics on the LAN:



Ping: this tool allows you to enter an IP address and see if a computer (or other

network device) responds with that address on the network. The name comes

from the pulse that submarine SONAR emits when scanning for underwater

objects, since the process is rather similar. You can use this tool to see if an IP

address is in use, or to discover if a device (whose IP address you know) is

working properly.

BASIC

Version 2.0, 07/2015. Copyright

2015 Hitron Technologies

3

Hitron CGNM/ CGNM-3552 User’s Guide



Traceroute: this tool allows you to see the route taken by data packets to get

from the CGNM/ CGNM-3552 to the destination you specify. You can use this

tool to solve routing problems, or identify firewalls that may be blocking your

access to a computer or service.

4.1.5

Port Forwarding

Port forwarding allows a computer on your LAN to receive specific communications

from the WAN. Typically, this is used to allow certain applications (such as gaming)

through the firewall, for a specific computer on the LAN. Port forwarding is also

commonly used for running a public HTTP server from a private network.

You can set up a port forwarding rule for each application for which you want to open

ports in the firewall. When the CGNM/ CGNM-3552 receives incoming traffic from the

WAN with a destination port that matches a port forwarding rule, it forwards the traffic

to the LAN IP address and port number specified in the port forwarding rule.

NOTE:

For information on the ports you need to open for a particular application,

consult that application’s documentation.

4.1.6

Port Triggering

Port triggering is a means of automating port forwarding. The CGNM/ CGNM-3552

scans outgoing traffic (from the LAN to the WAN) to see if any of the traffic’s

destination ports match those specified in the port triggering rules you configure. If

any of the ports match, the CGNM/ CGNM-3552 automatically opens the incoming

ports specified in the rule, in anticipation of incoming traffic.

4.1.7

DMZ

In networking, the De-Militarized Zone (DMZ) is a part of your LAN that has been

isolated from the rest of the LAN, and opened up to the WAN. The term comes from

the military designation for a piece of territory, usually located between two opposing

forces, that is isolated from both and occupied by neither.

4.2

The LAN Setup Screen

Use this screen to: