The Security Tab - Filter; Figure 6-24: Security Tab - Filter; Figure 6-25: List Of Pcs - Linksys WRK54G (EU/LA) User Manual

Wireless-G Broadband Router

The Security Tab - Filter

Filters block specific internal users from accessing the Internet. From the Filters tab, you can set up a filter
through an IP address or a network port number.
Filter IP Address 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 who have 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.
Filter Port Range. To filter users by network port number, select a protocol, then 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.
Filter MAC Address. This feature filters the Ethernet adapter's specific MAC address from going out to the
Internet. To check your Ethernet adapter's MAC address, you can 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 the screen appears, select the range in the drop-down menu, and in a MAC number
field, enter the 12-digit MAC address you want to filter. Click Apply to save the changes, or Undo to undo the
changes. For information on obtaining a MAC address, go to Appendix E: Finding the MAC Address and IP Address
for Your Ethernet Adapter.
Block WAN Requests. Enable the Block WAN Request feature by checking the radio button beside Block

Figure 6-24: Security Tab - Filter

Anonymous Internet Requests and you can prevent your network from being pinged or detected by other
Internet users. Click Disabled it you want to allow anonymous Internet requests.The Block WAN Request feature
also reinforces your network security by hiding your network 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.
Filter Multicast. This feature allows for multiple transmissions to specific recipients at the same time. Select
Enabled to support the feature, or Disabled to keep the Router from multicasting.
Filter Internet NAT Redirection. This feature uses Port Forwarding to prevent access to local servers from your
local networked computers.
Change these settings as described here and click the Save Settings button to apply your changes or Cancel
Changes to cancel your changes.

Figure 6-25: List of PCs

Chapter 6: Configuring the Wireless-G Broadband Router 27
The Security Tab - Filter