- NETGEAR Modem Router Reference Guide

Reference Guide for the Model RM356 Modem Router
Filter Configuration 8-7
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 startin
g
offset. That is,
in the data packet, at what point do you want to be
g
in the comparison. The ran
g
e for
this field is from 0 to 255. Default = 0.
Len
g
th This field refers to the len
g
th (in bytes) of the data in the packet that the router should
use for comparison and maskin
g
. The startin
g
point of this data is determined by Offset.
The ran
g
e for this field is 0 to 8. Default = 0.
Mask In this field, specify (in hexadecimal) the value that the router should lo
g
ically qualify
and the data in the packet. Because len
g
th is
g
iven in bytes, enter a hexadecimal
number that is twice the specified len
g
th for numbers in this field. For example, if len
g
th
is 4, a valid Mask entry 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 ali
g
n with Offset. Because len
g
th is
g
iven in
bytes, you need to enter twice the len
g
th in hexadecimal numbers for this field. For
example, if len
g
th is 4, a valid Value entry 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 throu
g
h 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.