TRENDnet TW-H6W1IR - Manual (Page 74)

TW-H6W1IR ISDN Remote Router
66 Configuration and
Management
internetwork traffic; and you can configure a filter at the data-link layer
(a general filter) to provide a protocol independent filter.
Good knowledge of network protocols is required to configure a
specific filter appropriately. It is important for the router to operate
correctly, therefore, necessary packets must be allowed to pass through
the filters. In other words, do not attempt to configure filters on a
utilized router unless you understand what you are doing.
The following section describes how to configure the router filter
parameters.
Configuring a Filter Set
Under the Advanced Functions menu, select and enter Filter
Configuration. You will see the following screen:
The three sub-menus are described as follows: