Figure 7-10 Menu 21.4.1 - Generic Filter Rule; Table 7-4 Generic Filter Rule Menu Fields; Filter Configuration - ZyXEL Communications Prestige 314 PLUS User Manual

Prestige 314 PLUS Broadband Sharing Gateway with 4-Port Switch
7.2.4 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. 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, e.g.,
FFFFFFFF.
To configure a generic rule, select Generic Filter Rule in the Filter Type field in the menu 21.4.1 and
press [ENTER] to open Menu 21.4.1 - Generic Filter Rule, as shown below.
Press Space Bar to Toggle.
The following table describes the fields in the Generic Filter Rule Menu.
Field
Filter # This is the filter set, filter rule co-ordinates, i.e., 2,3 refers to the
second filter set and the third rule of that set.
7-12
Menu 21.4.1 - Generic Filter Rule
Filter #: 4,1
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:
Figure 7-10 Menu 21.4.1 — Generic Filter Rule

Table 7-4 Generic Filter Rule Menu Fields

Description EXAMPLE

Filter Configuration