ZyXEL NBG6515 User Guide - Page 130
IP Filtering Rule Screen
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Chapter 19 Firewall The following table describes the labels in this screen. Table 64 Security > Firewall > MAC Filtering Rule LABEL DESCRIPTION MAC Filtering Rule Enable MAC Filtering Select this check box to enable MAC address filtering. Define the filter action for the list of MAC addresses in the MAC Filtering Table. Select Allow to permit access to the NBG, MAC addresses not listed will be denied access to the NBG. Select Deny to block access to the NBG, MAC addresses not listed will be allowed to access the NBG. MAC Filtering Table Client PC MAC Address Enter the MAC address of the computer for which the MAC filtering rule applies. Comment Enter a name that identifies or describes the firewall rule. Add Click this to add the MAC filtering rule. MAC Filtering Table NO. This is the number of an individual MAC filtering rule. Client PC MAC Address This field displays the MAC address of the computer. Comment This field displays the descriptions of the MAC filtering rule. Select Select the MAC filtering rule which you want to delete. Delete Selected Click the Delete Selected button to remove the MAC filtering rule which selected from the MAC Filtering Table. A window displays asking you to confirm that you want to delete the rule. Delete All Click the Delete All button to remove all MAC filtering rules from the NBG. A window displays asking you to confirm that you want to delete all rules. Apply Click Apply to save your changes back to the NBG. Reset Click Reset to start configuring this screen again. See Appendix D on page 225 for commonly used services and port numbers. 19.6 IP Filtering Rule Screen If an outside user attempts to probe an unsupported port on your NBG, an ICMP response packet is automatically returned. This allows the outside user to know the NBG exists. Use this screen to prevent the ICMP response packet from being sent. This keeps outsiders from discovering your NBG when unsupported ports are probed. You can also use this screen to enable service blocking, enter/delete/modify the services you want to block and the date/time you want to block them. Click Security > Firewall > IP Filtering Rule. The screen appears as shown next. NBG6515 User's Guide 130