41

IP Filter Set Index:

The IP Filter Set Index from 1 to 12 and each index can set up to

6 IP Filter.

Interface:

Choices from

PVC0

to

PVC7

and

LAN

.

Direction:

Choices are

Both

,

Incoming

and

Outgoing

. Select which direction of data

flow you wish to apply the filters to.

Note

that

Incoming and Outgoing

are from the

point of view of your router, relative to the interface you select.

For WAN

, data

coming from outside your system is considered Incoming and data leaving your

system is Outgoing.

For LAN

, data leaving your system is considered Incoming and

data entering your system is Outgoing.

IP Filter Rule Editing:

Select the IP Filter Rule Index you wish to modify.

Active:

Toggle this rule index on or off with Yes or No, respectively.

Source IP Address:

Enter the source IP address you wish to deny access to your

system.

Subnet Mask:

Enter the subnet mask of the source IP address.

Port Number:

Enter the port number of the source IP address. Note that 0 means all

that ports are allowed.

Destination IP Address:

Enter the destination IP address that you wish to deny

access to your system.

Subnet Mask:

Enter the subnet mask of the destination IP address

Port Number:

Enter the port number of the destination IP address. Note that 0 means

that all ports are allowed

Protocol:

Select the protocol to filter. Choices are TCP, UDP, and ICMP.

Rule Unmatched:

Choices are

Forward

and

Next.

Select what happens to the data in

question if the rule you are currently editing is unmatched. Next means that the data is

then compared to the next IP filter rule. Forward means that the data will be allowed

into your system. Note that a Forward rule should be the last rule, as no data will be

compared to rules after a Forward rule.

IP Filter Set Index:

Select the IP filter set you wish to view.

42

°

3.9.3 SNMP

Go to

Access Management

->

SNMP

to set SNMP.

The

Simple Network Management Protocol (SNMP)

is used for exchanging

information between network devices. It enables a host computer to access

configuration, performance, and other system data that resides in a database on the

modem. The host computer is called a

management station

and the modem is called an

SNMP agent

. The data that can be accessed via SNMP is stored in a

Management

Information Database

(MIB) on the modem.

43

Get Community:

Select to set the password for incoming Get- and GetNext request

from management station.

Set Community:

Select to set the password for incoming Set request from

management station.

The default password is ‘

public

’. When you are done making changes, click on

SAVE

to save your changes.

°

3.9.4 UPNP

Go to

Access Management

->

UPNP

to

set UPNP.

UPnP (Universal Plug and Play)

is a distributed, open networking standard that uses

TCP/IP for simple peer-to-peer network connectivity between devices. An UPnP

device can dynamically join a network, obtain an IP address, convey its capabilities

and learn about other devices on the network. In turn, a device can leave a network

smoothly an automatically when it is no longer in use. UPnP broadcasts are only

allowed on the LAN.

How do I know if I'm using UPnP?

UPnP hardware is identified as an icon in the Network Connections folder (in Windows

XP & Windows ME). Each UPnP-compatible device that is installed on your network

will appear as a separate icon.

44

UPnP (Universal Plug and Play):

You can choose

“Activated”

or

“Deactivated”

option from this session.

Auto-Configured (by UPnP Application):

UPnP network devices can automatically

configure network addressing, announce their presence in the network to other UPnP

devices and enable exchange of simple product and service descriptions. Choose

“Activated”

option to allow UPnP-enabled applications to automatically configure

the ADSL Router so that they can communicate through the ADSL Router, for

example by using NAT traversal, UPnP applications automatically reserve a NAT

forwarding port in order to communicate with another UPnP enabled device; this

eliminates the need to manually configure port forwarding for the UPP enabled

application. If you don’t want to make configuration changes through UPnP, just

choose

“Deactivated”

.

SAVE

: Click

SAVE

to save the setting to the ADSL Router.

°

3.9.5 DDNS

Go to

Access Management-

>

DDNS

to set DDNS account.

The

Dynamic Domain Name System

allows you to update your current dynamic IP

address with one or many dynamic DNS services so that anyone can contact you (in

NetMeeting, CU-SeeMe, etc.). You can also access your FTP server or Web site on

your own computer using a DNS-like address (for instance myhost.dhs.org, where my

host is a name of your choice) that will never change instead of using an IP address that

changes each time you reconnect. Your friends or relatives will always be able to call

you even if they don'

t know your IP address. First of all, you need to have registered a

dynamic DNS account with www.dyndns.org. This is for people with a dynamic IP

from their ISP or DHCP server that would still like to have a DNS name. The Dynamic

DNS service provider will give you a password or key.

45

Dynamic DNS

: Choose the option for

Activated

or

Deactivated

DDNS.

Service Provider:

The default Dynamic DNS service provider is

www.dyndns.org

.

My Host Name:

Type the domain name assigned to your ADSL by your Dynamic

DNS provider.

E-mail Address

: Type your e-mail address.

Username:

Type your user name.

Password:

Type the password assigned to you.

Wildcard support:

Select

Yes

or

No

to turn on DYNDNS Wildcard.

DYNDNS Wildcard

--> Enabling the wildcard feature for your host causes

*.yourhost.dyndns.org to be aliased to the same IP address as yourhost.dyndns.org.

This

feature

is

useful

if

you

want

to

be

able

to

use,

for

example,

www.yourhost.dyndns.org and still reach your hostname.

SAVE:

Click

SAVE

to save your changes.

Note that you must enter the user name exactly as your ISP assigned it. If the assigned

name is in the form of

user@domain

where domain identifies a service name, enter it

exactly as given. When you are done making changes, click on SAVE to save your

changes.

°

3.10 Advanced Setup

°

3.10.1 NAT Setting

Go to

Advanced Setup->NAT

to setup the NAT features.

Network Address Translation (NAT)

is a method for disguising the private IP

addresses you use on your LAN as the public IP address you use on the Internet. You

define NAT rules that specify exactly how and when to translate between public and

private IP addresses. Simply select this option to setup the NAT function for your

ADSL router.