Prestige 652 ADSL Security Router

16.3 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.

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.

16.3.1 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 in the Filter Type field and press [ENTER] to open Menu 21.1.7.1 – TCP/IP Filter Rule, as shown next.

Menu 21.1.7.1 - TCP/IP Filter Rule

Filter #: 4,1

Filter Type= TCP/IP Filter Rule

Active= Yes

IP Source Route= No

IP Protocol= 6

Destination: IP Addr= 0.0.0.0

IP Mask= 0.0.0.0

Port #= 137

Port # Comp= Equal

Source: IP Addr= 0.0.0.0

 

IP Mask= 0.0.0.0

 

Port #= 0

 

Port # Comp= None

TCP Estab= No

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 16-10 Menu 21.1.7.1 TCP/IP Filter Rule

The following table describes how to configure your TCP/IP filter rule.

16-8

Filter Configuration