NETGEAR GS108T-100NAS manual Trusted MAC

GS108T Smart Switch Software Administration Manual

Trusted MAC

A trusted MAC address protects the switch from an untrusted intruder that attempts to invade the system. Only the source address (SA) of the packet in the trusted MAC table can be switched to the destination port. You can add a total of 100 trusted MAC addresses. MAC addresses are port based. All source MAC addresses are trusted when the Trusted MAC list is empty.

The filter settings that determine whether a source MAC address is trusted depend on the VLAN configuration:

•When the VLAN is in IEEE 802.1Q mode (see “IEEE 802.1Q VLANs” on page 4-9), the filter settings are the port, VLAN ID, and source MAC address.

•When the VLAN is in port-based mode (see “Port-based VLANs” on page 4-9), the filter settings are the port and source MAC address.

To configure trusted MAC addresses:

1.Select Security > Access > Trusted MAC. A screen similar to the following one displays.

Figure 5-14

2.The following fields are displayed. Except for the ID fields, all fields are configurable:

•ID. Shows the identifier for the MAC address.

•Interface. Specifies the interface to which the MAC address is assigned. Select an interface from the drop-down list.

•MAC Address. Specifies the trusted MAC address. Enter a MAC address in the XX:XX:XX:XX:XX:XX format.

•VLAN ID. Specifies the VLAN ID to which the MAC address is assigned. Select a VLAN ID from the drop-down list. This field is configurable only when the VLAN is in

IEEE 802.1Q mode.

Configuring QoS and Security 5-21

v1.0, December 2007