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EtherFast
®
Cable/DSL Router with QoS and 8-Port Switch
42
Instant Broadband
®
Series
41
Filtered Private Port Range
•
To filter users by network port number, enter a network port number or a
range of network ports. Enter the port numbers you want to filter in the port
numbers fields. Users connected to the Router will no longer be able to
access any port number listed there. Click the Apply button when you’re
done.
Private MAC Filter
•
This feature filters the
Ethernet adapter’s specific
MAC address from going out
to the Internet.
•
To check your Ethernet
adapter’s MAC address, run
winipcfg or ipconfig in the
command prompt, depending
on which Windows operating
system you are using. To set
the MAC filter, click the Edit
MAC Filter Setting button.
When a second window
appears (see Figure 6-19),
select the range in the drop-
down box, and at the MAC
number prompt, enter the 12-digit MAC address you want to filter. Click
the Apply button before closing the window. For information on obtaining
a MAC address, go to “Appendix F: Finding the MAC Address and IP
Address for Your Ethernet Adapter.”
Block WAN Requests
•
By enabling the Block WAN Request feature, you can prevent your network
from being “pinged,” or detected, by other Internet users. The Block WAN
Request feature also reinforces your network security by hiding your net-
work ports. Both functions of the Block WAN Request feature make it more
difficult for outside users to work their way into your network. This feature
is enabled by default.
Multicast Pass Through
•
This feature allows for multiple transmissions to specific recipients at the
same time. Select Enable to enable the feature, or Disable to keep the
Router from multicasting.
Figure 6-19
From the Filters tab, shown in Figure 6-18, you can set up IP filters to block
specific internal users from accessing the Internet and enable Virtual Private
Network (VPN) sessions. You can set up filters by using IP addresses or net-
work port numbers (or a range of ports).
Filtered Private IP Range
•
To set up a filter using IP addresses, enter the range of IP addresses you
wish to filter in the IP address fields. Users with filtered IP addresses will
not be able to access the Internet at all. If you only want to filter one IP
address instead of a range of IP addresses, enter the same value into both
fields. For instance, if you wish to filter the PC with the IP address of
192.168.1.5, enter 5 into both fields on one line: 192.168.1.5 ~ 192.168.1.5.
Click the Apply button when finished.
IP Filtering
Figure 6-18