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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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