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Using the MAC Filtering Option

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4. Click

IP Filtering

from the left side menu. Field descriptions are listed below the

screen example.

6.3

Using the MAC Filtering Option

The

MAC Filtering

option allows you to filter MAC addresses to block Internet traffic from

specific network devices on the LAN. MAC filtering establishes a list and any host on this

list is not able to access the network through the DDW365.

Steps

To filter MAC addresses:

1.

Note the MAC address of the devices that you want to deny Internet access.

Be sure all devices to which you potentially deny Internet access are connected to the

DDW365 network.

2. Click

Advanced

from the main menu.

3. Click

MAC Filtering

from the left side menu.

Label

Description

Start Address

Defines the starting IP address to block.

End Address

Defines the ending IP address to block.

Enabled

Activates the rule when Enabled is checked.

Apply

Saves changes.

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Using the Port Filtering Option

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4. Enter the MAC address to block in the text box to the left of the

Add MAC Address

button.

5. Click the

Add MAC Address

button. The MAC address is displayed in the filtered

MAC address list. Field descriptions are listed below the screen example.

6.4

Using the Port Filtering Option

Use the

Port Filtering

option to configure port filters to block to all devices on the LAN

Internet services that use the ports specified.

Steps

To configure port filters:

1.

Click

Advanced

from the main menu.

2. Click

Port Filtering

from the left side menu. Field descriptions are listed below the

screen example.

Label

Description

MAC Addresses

Defines the MAC address to block. Enter the MAC address in

the field.

Add MAC Address

Adds the MAC address to the list of addresses to block.

Addresses entered: n/20

Displays the MAC addresses to be blocked. The number of

MAC addresses entered is shown as 1/20 where 1 is the

number of addresses in the list. You can filter up to twenty

MAC addresses at one time.

Remove MAC Address

Deletes the selected MAC address from the list of addresses

to be blocked.

Clear All

Removes all MAC addresses from the list.

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Using the Port Filtering Option

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For example:

To prevent all Telnet access into and across your LAN:

1.

Enter the

Start

and

End

ports to be 23.

2. Select

Both

for Protocol to include TCP and UDP.

3. Check

Enabled

.

4. Click

Apply

. Field descriptions are listed below the screen example.

Caution

Use caution when assigning port filtering by port range. You may accidentally prevent

traffic that should pass through your network, such as http or email. Pre-assigned

application ports are displayed on the Forwarding screen. Refer to

Using the Forwarding

Option on page 45

.

Label

Description

Start Port

Defines the starting port number

End Port

Defines the ending port number.

Protocol

Selects the protocol type. Options are UDP, TCP, or Both.

Enabled

Activates the rule and filters out all traffic on the specified

ports.

Apply

Saves changes.

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Using the Forwarding Option

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6.5

Using the Forwarding Option

Forwarding tells the DDW365 to which computer on the local area network to send data.

If your host systems or applications have communications issues with the Internet, you

can use forwarding to resolve the following issues:



Data is sent from a local host to the Internet, but the return path of expected data is

not received by your local host.



An application or service running on your local network (on local host) cannot be

accessed from the Internet directly (for example, a request to a local audio server).

Examples are:



Xbox/PlayStation

–

Games/applications



Home Security Systems

–

Security systems that use the Internet



Audio Servers/VoIP

–

Audio and VoIP applications and services

Topics

See the following topics:



Before Setting Up Forwarding on page 45



Setting Up Forwarding on page 46



Setting Up Forwarding for an Xbox Example on page 48

6.5.1

Before Setting Up Forwarding

Try the following options before you assign forwarding rules:

1.

Enable Universal Plug and Play (UPnP). This may resolve the issue you have without

setting up forwarding rules.

a.

Access the Web interface of the DDW365, see

Accessing the Web User Interface

Locally on page 15

.

b. Click

Advanced

from the main menu.

c. The

Options

screen

is displayed. Check the

Enable UPnP

box.

.

d. Click

Apply

.

e.

Test your local host or application such as your Xbox to see if it is functioning

properly. Continue with port forwarding if the host or application is not

communicating correctly.

2. Assign a Static IP lease to the client/host to which you are setting up forwarding. This

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Using the Forwarding Option

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way, the IP does not change and disrupt your forwarding rules. For example, if you are

hosting a Web server in your internal network, and you wish to setup a forwarding rule

for it, assign a static IP lease to that system to keep the IP from renewing and

disrupting the forwarding rule.

6.5.2

Setting Up Forwarding

If the suggestions in

Before Setting Up Forwarding on page 45

did not correct your

communication problem, use port forwarding.

You need the following information to set up port forwarding:



IP address

of each local host system (for example, Xbox) for which you need to setup

a port forwarding rule.



Port numbers

the local host’s application listens to for incoming requests/data (for

example, a game or other service). These port numbers should be available in the

documentation associated with the application.

Note

For detailed information on port forwarding, including how to set it up for specific

applications using specific network devices (for example, cable modems), refer to:

http://portforward.com

or consult your host device or application user manual.

Steps

To set up forwarding:

1.

Access the Web interface of the cable modem, see

Accessing the Web User Interface

Locally on page 15

.

2. Click

Advanced

from the main menu.

3. Click

Forwarding

from the left menu.

4. Click

Create IPv4