Figure 14. Example of Options Page

To enable a feature:

1

Click the appropriate check box (a check mark will appear).

2

When you are done with your selections, click on the

Apply

button.

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Table 9. Options Menu Option

Option

Description

WAN Blocking

Prevents the cable modem/router or the PCs behind it from being visible to

the WAN (i.e. from the Internet). For instance, pings to the cable

modem/router’s WAN IP address or to the devices behind it are not

returned. This makes it more difficult for hackers to attack your PCs and

other devices on your network.

IPSec/PPTP

PassThrough

Enable to support VPN devices or software on your network.

Remote

Configuration

Management

Allows the cable modem/router to be remotely administered at port 8080.

When enabled, navigate to http://CMIPAddress:8080/ to administer the

cable modem/router remotely). You can find your CM: WAN IP address on

the

Basic Setup

page.

Multicast Enable

Allows multicast specific traffic (denoted by a multicast specific address) to

be passed to and from the PCs on the private network behind the cable

modem/router.

UPnP Enable

Select Enable to enable the UPnP agent in the cable modem/router. If you

are running an application that requires UPnP, check this box.

RgPassThrough

Allows PCs behind the cable modem/router to bypass the cable

modem/router DHCP server and NAT functions. PCs or other IP devices

can be added to the passthrough table by entering the MAC addresses of the

devices into the passthrough table.

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IP Filtering

The IP Filtering page allows you to configure IP address filters in order to block Internet traffic to

specific network device on your LAN. By entering starting and ending IP address ranges, you can

configure which local PCs are denied access to the WAN.

To access the

IP Filtering

page:

1

Click

Advanced

in the menu bar.

2

Then click the

IP Filtering

submenu.

Figure 15 shows an example of the menu and Table 10 describes the items you can select.

Figure 15. Example of IP Filtering Page

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To activate the IP address filter:

1

Enter the last byte (the numbers after the last period) of the IP address in

Start Address

and

End Address

.

2

Check the

Enable

box to the right of the entry to store settings.

3

Click the

Apply

button to activate the filter rules.

Table 10. IP Filtering Menu Option

Option

Description

Start/End

Address

Enter the last byte of the IP address. The upper bytes of the IP address are set

automatically from the cable modem/router IP address.

Enable

To activate the IP address filter, you must also check the

Enable

box and click

Apply

. You can disable this filter while retaining the addresses you entered for

later use.

MAC Filtering

The MAC Filtering page allows you to configure MAC address filters in order to block Internet traffic

to specific network devices on your LAN.

To access the

MAC Filtering

page:

1

Click

Advanced

in the menu bar.

2

Then click the

MAC Filtering

submenu.

Figure 16 shows an example of the menu and Table 11 describes the items you can select.

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Figure 16. Example of MAC Filtering Page

Table 11. MAC Filtering Menu Option

Option

Description

MAC Address

PCs and other devices can be added to the MAC filter table by entering their

MAC addresses into the

Add MAC Address

box, and clicking the

Add MAC

Address

button. Internet traffic to and from each listed Address will be

blocked.

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