ZyXEL Communications Prestige 782R, User Manual, Page: 100 / 166

Prestige 782R G.SHDSL Router
8-10 Filter Configuration
8.3.2 Generic Filter Rule
This section shows you how to configure a generic filter rule. The purpose of generic rules is to allow you
to filter non-IP packets. For IP, it is generally easier to use the IP rules directly.
For generic rules, the Prestige treats a packet as a byte stream as opposed to an IP or IPX packet. You
specify the portion of the packet to check with the Offset (from 0) and the Length fields, both in bytes. The
Prestige applies the Mask (bit-wise ANDing) to the data portion before comparing the result against the
Value to determine a match. The Mask and Value are specified in hexadecimal numbers.
Two hexadecimal digits represent a byte, so if the length is 4, the value in either
field will take 8 digits, e.g., FFFFFFFF.
To configure a generic rule select an empty filter set in menu 21, for eg., 5. Select the Generic Filter Rule
in the Filter Type field and press [ENTER] to open Menu 21.5.1
–
Generic Filter Rule , as shown in the
following figure.
Figure 8-8 Menu 21.1.1
–
Generic Filter Rule
The next table describes the fields in the Generic Filter Rule menu.
Menu 21.5.1 - Generic Filter Rule
Filter #: 5,1
Filter Type= Generic Filter Rule
Active= No
Offset= 0
Length= 0
Mask= N/A
Value= N/A
More= No Log= None
Action Matched= Check Next Rule
Action Not Matched= Check Next Rule
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.