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Figure 4-9

)

Note:

After you finish the Internet configuration, please click

Save

to make the settings take effect.

4.4.2 Interface Grouping

Choose “

Network

”

Æ

“

Interface

Grouping

”, you can view all the current groups on this page

(shown in Figure 4-10).

Figure 4-10

¾

VLAN:

Enable or disable this function. Virtual LAN (VLAN) is a group of devices on one or

more LANs that are configured so that they can communicate as if they were attached to the

same LAN, when in fact they are located on a number of different LAN segments. Because

VLANs are based on logical instead of physical connections, it is very flexible for user/host

management, bandwidth allocation and resource optimization. If you want to active this

function, this function must be enabled.

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To support this feature, you must create mapping groups with appropriate LAN and WAN

interfaces using the

Add

button. The

Remove

button will remove the grouping and add the

ungrouped interfaces to the Default group. Only the default group has IP interface.

Click the

Add

button. You can add a new interface group in the next screen. For example, you

want LAN1 and LAN3 to be a group called Group 1 over br_0_35_0 WAN interface, you can refer

to the following figure.

Figure 4-11

Click

Save

to make the entry effective immediately

4.4.3 LAN Settings

Choose “

Network

”

Æ

“

LAN Settings

” menu, and you will see the LAN screen (shown in Figure

4-12). Please configure the parameters for LAN ports according to the descriptions below.

Figure 4-12

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¾

IP Address:

You can configure the Modem Router’s IP Address and Subnet Mask for LAN

Interface.

•

IP Address:

Enter the Modem Router’s local IP Address, then you can access to the

Web-based Utility via the IP Address, the default value is 192.168.1.1.

•

Subnet Mask:

Enter the Modem Router’s Subnet Mask, the default value is

255.255.255.0.

¾

Enable IGMP Snooping:

If you select the option, please choose the IGMP Mode

:

Standard

Mode or Blocking Mode.

¾

Enable Second IP:

You can configure the Modem Router’s second IP Address and Subnet

Mask for LAN Interface through which you can also access to the Web-based Utility as the

default IP Address and Subnet Mask.

¾

DHCP Server:

These settings allow you to configure the Modem Router‘s Dynamic Host

Configuration Protocol (DHCP) server function. The DHCP server is enabled by default for the

Modem Router’s Ethernet LAN interface. DHCP service will supply IP settings to computers

which are configured to automatically obtain IP settings that are connected to the Modem

Router though the Ethernet port. When the Modem Router is set for DHCP, it becomes the

default gateway for DHCP client connected to it. Keep in mind that if you change the IP

address of the Modem Router, you must change the range of IP addresses in the pool used

for DHCP on the LAN.

•

Start IP Address:

Enter a value for the DHCP server to start with when issuing IP

addresses. Because the default IP address for the Modem Router is 192.168.1.1, the

default Start IP Address is

192.168.1.100

, and the Start IP Address must be 192.168.1.100

or greater, but smaller than 192.168.1.254.

•

End IP Address:

Enter a value for the DHCP server to end with when issuing IP

addresses. The End IP Address must be smaller than 192.168.1.254. The default End IP

Address is

192.168.1.254

.

•

Leased Time:

The Leased Time is the amount of time in which a network user will be

allowed connection to the Modem Router with their current dynamic IP address. Enter the

amount of time, in hours, then the user will be “leased” this dynamic IP address. After the

dynamic IP address has expired, the user will be automatically assigned a new dynamic IP

address. The default is

1440

minutes.

The detailed configuration about DHCP server, please refer to section

4.5 DHCP Server

.

4.4.4 MAC Clone

Choose menu “

Advanced Setup

”

Æ

“

MAC Clone

”, you can configure the MAC address of the

WAN Interface as shown below.

You can select corresponding WAN Interface from the drop-down list and click

Clone

button to

clone your current PC MAC, and then click

Save

.

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Figure 4-13

)

Note:

Only the WAN Ports can use MAC Address Clone function. All the clone MAC addresses must not

be the same with each other.

4.4.5 ALG Settings

Choose menu “

Advanced Setup

”

Æ

“

ALG Settings

”, and then you can configure the basic

security in the screen as shown in Figure 4-14.

Figure 4-14

¾

Virtual Private Network (VPN) -

VPN Passthrough must be enabled if you want to allow VPN

tunnels using VPN protocols to pass through the Modem Router.

•

PPTP Pass-through

- Point-to-Point Tunneling Protocol (PPTP) allows the

Point-to-Point Protocol (PPP) to be tunneled through an IP network. To allow PPTP

tunnels to pass through the Modem Router, click

Enable

.

•

L2TP Pass-through

- Layer Two Tunneling Protocol (L2TP) is the method used to

enable Point-to-Point sessions via the Internet on the Layer Two level. To allow L2TP

tunnels to pass through the Modem Router, click

Enable

.

•

IPSec Pass-through

- Internet Protocol security (IPSec) is a suite of protocols for

ensuring private, secure communications over Internet Protocol (IP) networks, through

the use of cryptographic security services. To allow IPSec tunnels to pass through the

Modem Router, click

Enable

.

¾

Application Layer Gateway (ALG) -

It is recommended to enable Application Layer Gateway

(ALG) because ALG allows customized Network Address Translation (NAT) traversal filters to

be plugged into the gateway to support address and port translation for certain application

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layer "control/data" protocols such as FTP, TFTP etc.

•

FTP ALG

- To allow FTP clients and servers to transfer data across NAT, click

Enable

.

•

TFTP ALG

- To allow TFTP clients and servers to transfer data across NAT, click

Enable

.

Click the

Save

button to save your settings.

4.4.6 DSL Settings

Choose “

Advanced Setup

”

Æ

“

DSL Settings

”, you can select the DSL Modulation Type and

Annex Type in the next screen. The DSL feature can be selected when you meet the physical

connection problem. Please check the proper settings with your Internet service provider.

Figure 4-15

¾

DSL Modulation Type:

Select the DSL operation Modulation Type which your DSL

connection uses.

¾

Annex Type:

Select the DSL operation Annex Type which your DSL connection uses.

Click the

Save

button to save your settings.

4.5 DHCP Server

Choose “

DHCP Server

”, you can see the next submenus:

Click any of them, and you will be able to configure the corresponding function.

4.5.1 DHCP Settings

Choose menu “

DHCP Server

”

Æ

“

DHCP Settings

”, you can configure the DHCP Server on the

page as shown in Figure 4-16.The Modem Router is set up by default as a DHCP (Dynamic Host

Configuration Protocol) server, which provides the TCP/IP configuration for all the PC(s) that are

connected to the Modem Router on the LAN.