NETGEAR RT328 manual Generic Filter Rule Menu Fields

Filter.fm Page 7 Tuesday, October 10, 2000 3:25 PM

Reference Guide for the Model RT328 and Model RH348 ISDN Routers

Generic Filter Rule

This section provides information about configuring the protocol-independent parameters for

a generic filter rule for your router. Table 8-5 lists the fields in the menu. 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 8-5.	Generic Filter Rule Menu 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).
Value		In this field, specify (in hexadecimal) the value that the router should use to compare
		with the masked packet. The value should align with Offset. Because length is given in
		bytes, you need to enter twice the length in hexadecimal numbers for this field. For
		example, if length is 4, a valid Value must have 8 hexadecimal numbers (1155ABF8).
		If the result from the masked packet matches Value, then the packet is considered
		matched.
More		In this field, you can determine whether to pass the packet through the next filter rule
		before an action is taken. There are two options for this field:
		• Yes
		• No (Default)
		If Yes is selected for this field, Action Matched and Action Not Matched will be N/A.

Filter Configuration 8-7