Figure 34-9 Menu 21.1.5.1 Generic Filter Rule - ZyXEL Communications Prestige 652H series User Manual

Prestige 652H/HW Series User's Guide
34.4.2 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 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 fields are specified in hexadecimal numbers. Note that it takes two
hexadecimal digits to represent a byte, so if the length is 4, the value in either field will take 8 digits, for
example, FFFFFFFF.
To configure a generic rule select an empty filter set in menu 21, for example 5. Select Generic Filter
Rule in the Filter Type field and press [ENTER] to open Menu 21.1.5.1
in the following figure.
Press Space Bar to Toggle.
The next table describes the fields in the Generic Filter Rule menu.
34-12
Menu 21.1.5.1 - 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
Action Matched= Check Next Rule
Action Not Matched= Check Next Rule
Press ENTER to Confirm or ESC to Cancel:

Figure 34-9 Menu 21.1.5.1 Generic Filter Rule

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Log= None
Generic Filter Rule, as shown
Filter Configuration