ZyWALL 10 Internet Security Gateway

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

Generic Filter

 

each type will be different. TCP/IP filter rules are used to filter IP packets

Rule/ TCP/IP

 

while generic filter rules allow filtering of non-IP packets.

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

0

 

compare. The range for this field is from 0 to 255.

(Default)

Length

Enter the byte count of the data portion in the packet that you wish to

0

 

compare. The range for this field is 0 to 8.

(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

Yes/No

 

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.

 

 

 

 

Log

Select the logging option from the following:

 

 

None - No packets will be logged.

None

 

Action Matched - Only packets that match the rule parameters will be

Action

 

logged.

Matched

 

Action Not Matched - Only packets that do not match the rule

Action Not

 

parameters will be logged.

Matched

 

Both – All packets will be logged.

Both

 

 

 

Action

Select the action for a packet matching the rule.

Check Next

Matched

 

Rule, Forward,

 

 

Drop

Action Not

Select the action for a packet not matching the rule.

Check Next

Matched

 

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.

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Filters