Allied Telesis AT-WA7501 - Manual (Page 88)

Chapter 3: Configuring the Ethernet Network
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Configuring Advanced Filters
You can configure advanced filters if you need more flexibility in your
filtering. Settings for advanced filters execute after those for other filters;
that is, advanced filters are only applied if the frame has passed the other
filters.
You can use filter values and filter expressions to minimize network traffic
over the wireless links; however, Allied Telesyn recommends that you use
advanced Ethernet filters only if you have an extensive understanding of
network frames and their contents. Use other existing filters whenever
possible.
Setting Filter Values
You can associate an ID with a pattern value by selecting a filter and then
entering an ID and a value. All values with the same value ID belong to the
same list.
To set the value ID and value
1. From the main menu, click Ethernet > Advanced Filters. The Filter
Values screen appears.
Table 8. Example – Customizable Subtype Filter
Filter Parameter Value Explanation
1 Allow/Pass Clear (drop) This filter drops
DHCP
responses to
wireless end
devices
communicating
with this access
point.
Subtype DIX-IP-UDP-
Port
Value 00 43
2 Allow/Pass Clear (drop) This filter drops
DHCP requests
from DHCP
clients on the
Ethernet
network.
Subtype DIX-IP-UDP-
Port
Value 00 44