Filter Configuration; About Filtering - D-Link DI-106 Series User Manual

Filter Configuration

About Filtering

Your DI-106 or DI-106M uses filters to decide whether or not to
allow passage of a data packet and/or to make a call over the ISDN
line. There are three types of filters involved: incoming data filters,
outgoing data filters, and call filters. Data filters screen the data to
determine if the packet should be allowed to pass. Call filters are
used to determine if a call should be placed.
Outgoing packets must pass through the data filters before they
encounter the call filters. Call filters are divided into two groups:
default call filters and user-defined call filters. The router has
default call filters that filter out administrative packets, e.g., RIP
and SAP packets. The router applies the default filters first, and
then the user-defined call filters if applicable, as shown below:
Filter Configuration 103