Proxim ORiNOCO AP-8000 User Manual page 46

Access Point Features
Configuring the Device
• If you select to passthru, then the wireless traffic between the clients associated with the same or different BSS will be
able to communicate with each other.
The Filtering feature supports the filtering for following protocol layers:
Ethernet Layer Filtering
Static MAC Filtering
The Static MAC Address filter optimizes the performance of a wireless (and wired) network. When this feature is properly
configured, the AP can block traffic between wired devices and wireless devices based on MAC address.
For example, you can set up a Static MAC filter to prevent wireless clients from communicating with a specific server on
the Ethernet network. You can also use this filter to block unnecessary multicast packets from being forwarded to the
wireless network.
NOTE: The Static MAC Filter is an advanced feature. You may find it easier to control wireless traffic via other filtering
options, such as Ethernet Protocol Filtering.
Each static MAC entry contains the following fields:
• Wired MAC Address
• Wired MAC Mask
• Wireless MAC Address
• Wireless MAC mask
• Comment
• Status
Each MAC Address or Mask is comprised of 12 hexadecimal digits (0-9, A-F) that correspond to a 48-bit identifier. (Each
hexadecimal digit represents 4 bits (0 or 1)).
Taken together, a MAC Address/Mask pair specifies an address or a range of MAC addresses that the AP will look for
when examining packets. The AP uses Boolean logic to perform an "AND" operation between the MAC Address and the
Mask at the bit level. However, for most users, you do not need to think in terms of bits. It should be sufficient to create a
filter using only the hexadecimal digits 0 and F in the Mask (where 0 is any value and F is the value specified in the MAC
address). A Mask of 00:00:00:00:00:00 corresponds to all MAC addresses, and a Mask of FF:FF:FF:FF:FF:FF applies
only to the specified MAC Address.
For example, if the MAC Address is 00:20:A6:12:54:C3 and the Mask is FF:FF:FF:00:00:00, the AP will examine the
source and destination addresses of each packet looking for any MAC address starting with 00:20:A6. If the Mask is
FF:FF:FF:FF:FF:FF, the AP will only look for the specific MAC address (in this case, 00:20:A6:12:54:C3).
When creating a filter, you can configure the Wired parameters only, the Wireless parameters only, or both sets of
parameters. Which parameters to configure depends upon the traffic that you want to block:
• To prevent all traffic from a specific wired MAC address from being forwarded to the wireless network, configure only
the Wired MAC Address and Wired Mask (leave the Wireless MAC Address and Wireless Mask set to all zeros).
• To prevent all traffic from a specific wireless MAC address from being forwarded to the wired network, configure only
the Wireless MAC address and Wireless Mask (leave the Wired MAC Address and Wired Mask set to all zeros).
• To block traffic between a specific wired MAC address and a specific wireless MAC address, configure all four
parameters. Configure the wired and wireless MAC address and set the wired and wireless mask to all Fs.
• To prevent all traffic from a specific wired Group MAC address from being forwarded to the wireless network,
configure only the Wired MAC Address and Wired Mask (leave the Wireless MAC Address and Wireless Mask set to
all zeros).
• To prevent all traffic from a specific wireless Group MAC address from being forwarded to the wired network,
configure only the Wireless MAC address and Wireless Mask (leave the Wired MAC Address and Wired Mask set to
all zeros).
AP-8000 User Guide
46