D-Link DI-1162 - Manual (Page 76)

DI-1162 Remote Access Router
66 Configuration and Management
•
Time Threshold – this specifies the maximum amount of time (in
seconds) since the host began requesting an IP address. If the value
define here is exceeded, the relay agent will not pass along the
request from the host.
•
State – enables/disables the DHCP Relay Agent function.
Filter Configuration
Your DI-1162 uses filters (configurable at two layers) to screen packet
data, and apply a routing decision. There are two methods of
configuring a filter: you can configure a filter at the network layer (IP
filter) to restrict access between networks and reduce unnecessary
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: