Reference Guide for the Model RP114 Web Safe Router

Configuring Filters 10-9

Generic Filter Rule

This sectionprovides information about configuring the protocol-independent parameters for

a generic filterrule for your router. Table 10-5 lists the fields in themenu. When you complete

Menu 21.1.1 - GenericFilter Rule, press [Enter] at the Press ENTER to Confirm... prompt to

confirm yourselections. Press [Esc] at any time to cancel your selections. The data entered is

displayedonMenu21.1-FilterRulesSummary.

Table10-5. Generic Filter Rule Fields

Field Description
Active Makethe filter rule active (Yes) or inactive (No).
Offset Offsetrefers to the value of the byte that you want to use as your starting offset. That is,
inthe data packet, at what point do you want to begin the comparison. The rangefor
thisfield is from 0 to 255. Default = 0.
Length Thelength, in bytes, of the data in the packet that the router should use for comparison
andmasking. The starting point of this data is determined by Offset. The range for this
fieldis 0 to 8. Default = 0.
Mask Specify(in hexadecimal format) the value that the routershould logically qualify and the
datain the packet. Because length is given in bytes, enter a hexadecimal number that
istwice the specified length for numbers in this field. For example, if length is 4, a valid
Maskmust have 8 hexadecimal numbers (1155ABF8).
Value Specify ( in hexadecimal format ) the value that the router should use to compare with
themasked packet. The value should align with Offset. Because length is given in
bytes, you need to enter twice the length in h exadecimal numbers for this field. For
example,if length is 4, a valid value must have 8 hexadecimal numbers (1155ABF8).
Ifthe result from the masked packet matches Value, the packet is consideredmatched.
More Determine whether to pass thepacket through the next filter rule before an action is
taken.There are two options:
•Yes
•No(Default)
IfYes is selected, Action Matched and Action Not Matchedwill be N/A.