D-Link DI-308 manual Filter Configuration, Configuring a Filter Set

DI-308 ISDN Remote Router

Items are described as follows:

•DHCP Server IP Address – This is the IP address of the remote DHCP server. When a local computer powers up and sends a DHCP request for an IP address, the DI-308 will forward the request to the address specified here.

•Time Threshold – This specifies the maximum amount of time (in seconds) since the host began requesting an IP address. If the value defined here is exceeded, the relay agent will not pass along the request from the host.

•State – Enables or disables the DHCP Relay Agent function.

Filter Configuration

Your DI-308 uses filters (configurable at two layers) to screen packet data, and apply a routing decision. There are two methods for configuring filters: 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.

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:

47