Security |
 |
|
Source MAC Filtering |
Source MAC Filtering allows you to filter out traffic coming from certain known
machines or devices. The router uses the MAC address of a computer or device on
the network to identify it and block or permit the access. Traffic coming in from a specified
MAC address will be filtered depending upon the policy. |
MAC Filtering Table |
Enable Source MAC Filtering by selecting Yes. Disable
Source MAC Filtering by selecting the No radio button.
MAC Filtering has two policies 1)Block and Permit the rest 2)Permit
and Block the rest. If you choose the option Block and Permit the rest,
the router blocks the traffic from the following MAC addresses and allows
other. If you choose the option Permit and Block the rest, the
router permits the traffic from the following MAC addresses and blocks other
machines which are on the LAN side of the router . |
Example: If two computers are on the LAN with MAC
addresses of 00:01:02:03:04:05(host1),00:01:02:03:04:11(host2) .If host1 MAC
address is added to the MAC filtering list and you choose the
policy Block and Permit the rest, when
this computer tries to connect to www.yahoo.com (or any other
website), the router will not allow it to connect but host2 will be able
to connect. If we choose the policy Permit and Block the rest then host1
will be able to connect to www.yahoo.com (or any other website) but
host2 cannot. However, if this computer is
running some server (e.g., an FTP server), and a firewall rule is defined that
directs all FTP traffic to this machine (if under NAT mode), any machine
on the Internet will be able to make the FTP connection and upload or download
any file successfully. |
Available MAC Addresses |
This table lists the MAC Addresses to which policies can be applied. Depending
on our requirement you can enable any one of the two policies for the MAC
addresses. To remove
an entry from the table, select the MAC Address entry and click
Delete. To edit an entry, click Edit
adjacent to the entry. |
To select all the MAC addresses in the table, click Select All. |
Add Source MAC Address : |
To add a MAC Address to the table, input a valid MAC address in the MAC Address field and
click Add. MAC addresses are in the form:
xx:xx:xx:xx:xx:xx where x is a numeric (0 to 9) or an alphabetic (between
a and f inclusive); for example: 00:e0:4c:69:0a:11 |
Click Apply to submit your changes. |
Click Reset to revert back to the previous
settings. |
|