ZyXEL Communications ADSL/ADSL2/ADSL2+ Router 660R-6xC Series - Manual (Page 179)

Prestige 660R-6xC Series User’s Guide
Chapter 22 Filter Configuration 178
The protocol dependent filter rules abbreviation are listed as follows:
22.4 Configuring a Filter Rule
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.
22.4.1 TCP/IP Filter Rule
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
FILTER TYPE DESCRIPTION
IP
Pr Protocol
SA Source Address
SP Source Port Number
DA Destination Address
DP Destination Port Number
GEN
Off Offset
Len Length