Prestige 650M-17 ADSL Modem
Filter Set Configuration
5-7
Step 2.
Enter the index of the filter set you want to configure (in this case 3)
.
Step 3.
Enter a descriptive name or comment in the
Edit Comments
field (in this case, test).
Step 4.
Press
[ENTER]
at the message
“
Press [ENTER] to confirm or [ESC] to cancel” to open
Menu
21.3-Filter Rules Summary
.
Step 5.
Enter 1
to configure the first filter rule. When you press
[ENTER]
to confirm, the following
screen appears. Note that there is only one filter rule in this set. Make the entries in this menu as
shown next.
Figure 5-6 Sample Filter– Menu 21.3.1
When you press
[ENTER]
to confirm, you will see the next screen. Note that there is only one filter rule in
this set.
This is the length (in bytes) of the data portion
in the packet that you want to compare.
Menu 21.3.1 – Generic Filter Rule
Filter #: 3,1
Active=
Yes
Offset=
9
Length=
4
Mask=
789abcde
Value=
789abcde
More= No Log= None
Action Matched= Drop
Action Not Matched= Forward
Press ENTER to Confirm or ESC to Cancel:
Select
Yes
to make
the rule active.
This is the first byte of the data portion in
the packet that you want to compare.
The Mask is applied to the data portion before
comparing the result against the Value to
determine a match. It is specified in
hexadecimal, and it takes two hexadecimal digits
to represent a byte i.e., Length is 4, therefore
there are 8 hex numbers.
Enter the value (in hex) to compare with the data
portion.
There are no more rules to check in this filter set.
This setting logs all packets that match these
rule parameters.
Select
Drop
here so that the packet will be
dropped if the action is not matched.
Select
Forward
here so that the packet will be
forwarded if the action is matched.