ZyXEL Communications ZYWALL10 User Manual
Page 111
ZyWALL 10 Internet Security Gateway
7-12
Filters
Table 7-4 Generic Filter Rule Menu Fields
FIELD
DESCRIPTION
OPTIONS
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.
Filter Type
Use the [SPACE BAR] to select a rule type. Parameters displayed below
each type will be different. TCP/IP filter rules are used to filter IP packets
while generic filter rules allow filtering of non-IP packets.
Generic Filter
Rule/ TCP/IP
Filter Rule
Active
Select Yes to turn on the filter rule or No to turn it off.
Yes
Offset
Enter the starting byte of the data portion in the packet that you wish to
compare. The range for this field is from 0 to 255.
0
(Default)
Length
Enter the byte count of the data portion in the packet that you wish to
compare. The range for this field is 0 to 8.
0
(Default)
Mask
Enter the mask (in Hexadecimal notation) to apply to the data portion
before comparison.
Value
Enter the value (in Hexadecimal notation) to compare with the data
portion.
More
If Yes, a matching packet is passed to the next filter rule before an action
is taken; else the packet is disposed of according to the action fields.
If More is Yes, then Action Matched and Action Not Matched will be No.
Yes/No
Log
Select the logging option from the following:
None - No packets will be logged.
Action Matched - Only packets that match the rule parameters will be
logged.
Action Not Matched - Only packets that do not match the rule
parameters will be logged.
Both – All packets will be logged.
None
Action
Matched
Action Not
Matched
Both
Action
Matched
Select the action for a packet matching the rule.
Check Next
Rule, Forward,
Drop
Action Not
Matched
Select the action for a packet not matching the rule.
Check Next
Rule, Forward,
Drop
Once you have completed filling in Menu 21.4.1.1 - Generic Filter Rule, press [ENTER] at the message
“Press ENTER to Confirm” to save your configuration, or press [ESC] to cancel. This data will now be
displayed on Menu 21.1.1 - Filter Rules Summary.