Generic Filter Rule - NETGEAR RT338 Reference Manual

Table 9-4. TCP/IP Filter Rule Fields (continued)
Field Description
Log Choose whether or not to log the results of packets attempting to pass the filter rule.
These results are displayed on the System Log (see
Seven options are available for this field:
• None—No packets are logged (default).
• Action Matched—Only packets that match the rule parameters are logged.
• Action Not Matched—Only packets that do not match the rule parameters are logged.
Both—All packets are logged.
• Check Next Rule (default)
• Forward
• Drop
Action Matched Choose what to do with the packet if the conditions for the filter rule are not met.
Action Not There are three options for this field:
Matched • Check Next Rule (default)
• Forward
• Drop

Generic Filter Rule

This section provides information about configuring the protocol-independent parameters for
a generic filter rule for your router.
When you complete Menu 21.1.1 - Generic Filter Rule, press [Enter] at the Press ENTER to
Confirm... prompt to confirm your selections. Press [Esc] at any time to cancel your selections.
The data entered is displayed on Menu 21.1 - Filter Rules Summary.
Table 9-5. Generic Filter Rule Fields
Field Description
Active In this field, you can make the filter rule active (Yes) or inactive (No).
Offset Offset refers to the value of the byte that you want to use as your starting offset. That is,
in the data packet, at what point do you want to begin the comparison. The range for
this field is from 0 to 255. Default = 0.
Length This field refers to the length (in bytes) of the data in the packet that the router should
use for comparison and masking. The starting point of this data is determined by Offset.
The range for this field is 0 to 8. Default = 0.
Mask In this field, specify (in hexadecimal) the value that the router should logically qualify
and the data in the packet. Because length is given in bytes, enter a hexadecimal
number that is twice the specified length for numbers in this field. For example, if length
is 4, a valid Mask must have 8 hexadecimal numbers (1155ABF8).
Configuring Filters
Reference Guide for the Model RT338 ISDN Router
Table 9-5 lists the fields in Generic Filter Rule menu.
"View Error Log" on page 11-6).
9-7