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Version 1.1, 08/2013. Copyright
2013 Hitron Technologies
51
Hitron CGN3 User’s Guide
4.1.9
DDNS
Dynamic Domain Name Server (DDNS) is a service that maps Internet domain
names to IP addresses. Unlike DNS that only works with static IP addresses, DDNS
is designed to also support dynamic IP addresses, such as those assigned by a
DHCP server. That makes DDNS a good fit for home networks, which often receive
dynamic public IP addresses from their Internet provider that occasionally change.
4.2
The LAN Setup Screen
Use this screen to:
View information about the CGN3’s connection to the WAN
Configure the CGN3’s LAN IP address, subnet mask and domain suffix
Configure the CGN3’s internal DHCP server
Define how the CGN3 assigns IP addresses on the LAN
See information about the network devices connected to the CGN3 on the LAN.
Click
Basic
>
LAN Setup
. The following screen displays.
Page 52 / 114
Version 1.1, 08/2013. Copyright
2013 Hitron Technologies
52
Hitron CGN3 User’s Guide
Figure 17:
The Basic: LAN Setup Screen
The following table describes the labels in this screen.
Table 15:
The Basic: LAN Setup Screen
Private LAN Setting
Private LAN IP
Address
Use this field to define the IP address of the CGN3 on
the LAN.
Subnet Mask
Use this field to define the LAN subnet. Use dotted
decimal notation (for example,
255.255.255.0
).
Domain Suffix
Use this field to define the domain that you can enter
into a Web browser (instead of an IP address) to reach
the CGN3 on the LAN.
NOTE:
It is suggested that you make a note of your
device’s
Domain Suffix
in case you ever need
to access the CGN3’s GUI without knowledge of
its IP address.
LAN DHCP Status
Use this field to configure whether or not the CGN3’s
DHCP server is active.
To turn the DHCP server on, click
Enabled
.
To turn the DHCP server off, click
Disabled
.
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Hitron CGN3 User’s Guide
Lease Time
This displays the time that elapses before your device’s
IP address lease expires, and a new IP address is
assigned to it by the DHCP server.
DHCP Start IP
Use this field to specify the IP address at which the
CGN3 begins assigning IP addresses to devices on the
LAN (when DHCP is enabled).
DHCP End IP
Use this field to specify the IP address at which the
CGN3 stops assigning IP addresses to devices on the
LAN (when DHCP is enabled).
NOTE:
Devices requesting IP addresses once the
DHCP pool is exhausted are not assigned an IP
address.
Save Changes
Click this to save your changes to the fields in this
screen.
Cancel
Click this to return the fields in this screen to their last-
saved values without saving your changes.
Help
Click this to see information about the fields in this
screen.
WAN Info
WAN Address
This field displays the CGN3’s IP address on the WAN
(Wide Area Network) interface.
Prefix Length
This displays the prefix length supplied by your ISP
(typically 64).
DNS Server
This field displays the Domain Name Servers that the
CGN3 uses to resolve domain names into IP addresses.
Connected Computers
Host Name
This displays the name of each network device
connected on the LAN.
IP Address
This displays the IP address of each network device
connected on the LAN.
MAC Address
This displays the Media Access Control (MAC) address
of each network device connected on the LAN.
Type
This displays whether the device’s IP address was
assigned by DHCP (
DHCP-IP
), or
self-assigned
.
Interface
This displays whether the device is connected on the
LAN (
Ethernet
) or the WLAN (
Wireless(x)
, where
x
denotes the wireless mode;
b
,
g
or
n
).
Table 15:
The Basic: LAN Setup Screen (continued)
Page 54 / 114
Version 1.1, 08/2013. Copyright
2013 Hitron Technologies
54
Hitron CGN3 User’s Guide
4.3
The Gateway Function Screen
Use this screen to configure gateway function. You can turn port triggering on or off and
configure new and existing port triggering rules.
Click
Basic
>
Gatewat Function
. The following screen displays.
Figure 18:
The Basic: Gateway Function Screen
The following table describes the labels in this screen.
4.4
The Port Forwarding Screen
Use this screen to configure port triggering. You can turn port triggering on or off and
configure new and existing port triggering rules.
Click
Basic
>
Port Forwarding
. The following screen displays.
Table 16:
The Basic: Gateway Function Screen
Residential Gateway
Function
Use this field to turn gateway function on or off.
Select
Enabled
to turn gateway function on.
Select
Disabled
to turn gateway function off.
UPNP
Use this field to turn UPNP on or off.
Select
Enabled
to turn UPNP on.
Select
Disabled
to turn UPNP off.
Save Changes
Click this to save your changes to the fields in this
screen.
Help
Click this to see information about the fields in this
screen.
Page 55 / 114
Version 1.1, 08/2013. Copyright
2013 Hitron Technologies
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Hitron CGN3 User’s Guide
Figure 19:
The Basic: Port Forwarding Screen
The following table describes the labels in this screen.
Table 17:
The Basic: Port Forwarding Screen
All Port Forwarding Rules
Use this field to turn port forwarding on or off.
Select
Enabled
to turn port forwarding on.
Select
Disabled
to turn port forwarding off.
Port Forwarding Rules
Select
Select a port forwarding rule’s radio button before
clicking
Edit
or
Delete
.
#
This displays the arbitrary identification number
assigned to the port forwarding rule.
Application Name
This displays the name you assigned to the rule when
you created it.
Public
This field displays the incoming port range. These are
the ports on which the CGN3 received traffic from the
originating host on the WAN.
Private
This field displays the port range to which the CGN3
forwards traffic to the device on the LAN.
Protocol
This field displays the protocol or protocols to which this
rule applies:
Transmission Control Protocol (
TCP
)
User Datagram Protocol (
UDP
)
Transmission Control Protocol and User Datagram
Protocol (
TCP/UDP
)
Generic Routing Encapsulation (
GRE
)
Encapsulating Security Protocol (
ESP
)
Local IP Address
This displays the IP address of the computer on the LAN
to which traffic conforming to the rule’s conditions is
forwarded.

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