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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.
Page 57 / 135
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).
Page 58 / 135
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
).
Page 59 / 135
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.
Page 60 / 135
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:

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