Configuration manual

Chapter 11 Filter configuration 147
Nortel Business Secure Router 222 Configuration — Advanced
Table 36 describes the fields in the Generic Filter Rule menu.
Table 36 Generic Filter Rule Menu fields
Field Description Options
Filter # This is the filter set, filter rule coordinates, for example, 2,3
refers to the second filter set and the third rule of that set.
Filter
Type
Use [SPACE BAR] and then [ENTER] to select a rule type.
Parameters displayed below each type will be different. TCP/
IP filter rules are used to filter IP packets while generic filter
rules allow filtering of non-IP packets.
Generic Filter
Rule
TCP/IP Filter
Rule
Active Select Yes to turn on the filter rule or No to turn it off. Yes / No
Offset Enter the starting byte of the data portion in the packet that
you wish to compare. The range for this field is from 0 to
255.
0-255
Length Enter the byte count of the data portion in the packet that you
wish to compare. The range for this field is 0 to 8.
0-8
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 is taken; or the packet is disposed of
according to the action fields.
If More is Yes, then Action Matched and Action Not Matched
are No.
Yes
No
Log Select the logging option from the following:
None - No packets are logged.
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.
None
Action
Matched
Action Not
Matched
Both
Action
Matched
Select the action for a packet matching the rule. Check Next
Rule
Forward
Drop