Prestige 310 Broadband Sharing Gateway

7.2.4 Generic Filter Rule

This section shows you how to configure a generic filter rule. The purpose of generic rules is to allow you to filter non-IP packets. For IP, it is generally easier to use the IP rules directly.

For generic rules, the Prestige treats a packet as a byte stream as opposed to an IP or IPX packet. You specify the portion of the packet to check with the Offset (from 0) and the Length fields, both in bytes. The Prestige applies the Mask (bit-wise ANDing) to the data portion before comparing the result against the Value to determine a match. The Mask and Value are specified in hexadecimal numbers. Note that it takes two hexadecimal digits to represent a byte, so if the length is 4, the value in either field will take 8 digits, for example, FFFFFFFF.

To configure a generic rule, select Generic Filter Rule in the Filter Type field in the menu 21.6.1 and press [ENTER] to open Menu 21.6.1 — Generic Filter Rule, as shown next.

Menu 21.6.1 - Generic Filter Rule

Filter #: 6,1

Filter Type= Generic Filter Rule

Active= No

Offset= 0

Length= 0

Mask= N/A

Value= N/A

 

More= No

Log= None

Action

Matched= Check Next Rule

Action

Not Matched= Check Next Rule

Press ENTER to Confirm or ESC to Cancel:

Press Space Bar to Toggle.

Figure 7-10 Menu 21.6.1 — Generic Filter Rule

The following table describes the fields in the Generic Filter Rule Menu.

Table 7-4 Generic Filter Rule Menu Fields

Field

Description

Example

Filter #

This is the filter set, filter rule co-ordinates, i.e., 2,3 refers to the

 

 

second filter set and the third rule of that set.

 

 

 

 

Filter Type

Use the [SPACE BAR] to select a rule. Parameters displayed

Generic Filter Rule

 

below each type will be different. Options are: Generic Filter

 

 

Rule or TCP/IP Filter Rule.

 

Filter Configuration

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