Configuring A Filter Rule; Tcp/Ip Filter Rule - ZyXEL Communications Prestige 650R-31/33 User Manual

Zyxel adsl router user's guide

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Prestige 650R-31/33 ADSL Router

8.3

Configuring a Filter Rule

To configure a filter rule, type its number in Menu 21.1 – Filter Rules Summary and press [ENTER] to

open menu 21.1.1 for the rule.

There are two types of filter rules: TCP/IP and Generic. Depending on the type of rule, the parameters for

each type will be different. Use [SPACE BAR] to select the type of rule that you want to create in the

Filter Type field and press [ENTER] to open the respective menu.

To speed up filtering, all rules in a filter set must be of the same class, for instance, protocol filters or

generic filters. The class of a filter set is determined by the first rule that you create. When applying the

filter sets to a port, separate menu fields are provided for protocol and device filter sets. If you include a

protocol filter set in a device filters field or vice versa, the Prestige will warn you and will not allow you to

save.

This section shows you how to configure a TCP/IP filter rule. TCP/IP rules allow you to base the rule on

the fields in the IP and the upper layer protocol, for example, UDP and TCP headers.

To configure TCP/IP rules, select TCP/IP Filter Rule from the Filter Type field and press [ENTER] to

open Menu 21.1.1 – TCP/IP Filter Rule, as shown next.

8-8

Table 8-2 Rule Abbreviations Used

FILTER TYPE

GEN

Off

Offset

Len

Length

DESCRIPTION

Filter Configuration

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Prestige 650r-31 Prestige 650r-33