ZyWALL 2 Series User’s Guide

Table 30-2 Rule Abbreviations Used

ABBREVIATIONDESCRIPTION

IP

Pr

Protocol

SA

Source Address

SP

Source Port number

DA

Destination Address

DP

Destination Port number

GEN

Off Offset

Len Length

Refer to the next section for information on configuring the filter rules.

30.2.1 Configuring a Filter Rule

To configure a filter rule, type its number in Menu 21.1.1 - Filter Rules Summary and press [ENTER] to open menu 21.1.1.1 for the rule.

To speed up filtering, all rules in a filter set must be of the same class, i.e., 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 filter field or vice versa, the ZyWALL will warn you and will not allow you to save.

30.2.2 Configuring a 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.

30-6

Filter Configuration