Prestige 645M-A1 ADSL Bridge
5.3 Configuring a Filter Rule
To configure a filter rule, enter its number in
Menu 21.3 - Filter Rules Summary
and press
[ENTER]
to
open menu 21.x.3 for the rule.
5.3.1 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 generic rules, the Prestige treats a packet as a byte stream. 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
.
Figure 5-3 Generic Filter Rule
Table 5-3 Generic Filter Rule
FIELD DESCRIPTION EXAMPLE
Filter #
This is the filter set, filter rule co-ordinates, i.e., 2,3 refers to the
second filter set and the third filter rule of that set.
2,3
Active
Select
Yes
to turn on the filter rule or
No
to turn the filter rule off.
Yes
Menu 21.x.1 - Generic Filter Rule
Filter #: 1,1
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:
Filter Configuration
5-5