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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.

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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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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)

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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.

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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.