ZyXEL Communications Prestige 642M series, Руководство пользователя

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Prestige 642M Series ADSL Bridge
5-8 Filter Configuration
This is the length (in bytes) 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.
Figure 5-5 Example Filter - Menu 21.1.1
Press [ENTER] to confirm and you will see the following screen. Note that there is only one filter rule in
this set.
Menu 21.1.1 - Generic Filter Rule
Filter #: 1,1
Active= Yes
Offset= 128
Length= 4
Mask= 789abcde
Value= 789abcde
More= No Log= Action Matched
Action Matched= Forward
Action Not Matched= Drop
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.
Select Yes to make the rule
active.
This is the first byte of the
data portion in the packet that
you.
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.
This is the length (in bytes) of
the data portion in the packet
that you want to compare.
Enter the value (in hex) to
compare with the data
portion.
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.
There are no more rules
to check in this filter set.