ZyXEL Router ADSL 660R-61C 91-004-498005B Manuale Utente

Prestige 660R-6xC Series User’s Guide

Chapter 22 Filter Configuration

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The protocol dependent filter rules abbreviation are listed as follows:

To configure a filter rule, type its number in Menu 21.x – Filter Rules Summary and press 
[ENTER] to open menu 21.x.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.x.1 – TCP/IP Filter Rule, as shown next.

Table 52   Rule Abbreviations Used

IP

Pr

Protocol

SA

Source Address

SP

Source Port Number

DA

Destination Address

DP

Destination Port Number

GEN

Off

Offset

Len

Length