Reference Guide for the Model RT328 and Model RH348 ISDN Routers

Table 8-4.

TCP/IP Filter Rule Menu Fields (continued)

 

 

 

 

Field

 

Descriptions

 

 

 

 

 

Source

 

 

 

(continued):

 

 

 

Port # Comp

 

In this field, select the comparison quantifier you want to use to compare to the value

 

 

 

given in Source: Port #. There are five options for this field:

 

 

 

• None (Default)

 

 

 

• Less

 

 

 

• Greater

 

 

 

• Equal

 

 

 

• Not Equal

 

 

 

 

 

TCP Estab

 

This field is dependent upon the IP Protocol field. This field is inactive (N/A) unless the

 

 

value in that field is 6 (TCP protocol). In this field, you determine what type of TCP

 

 

packets to filter. There are two options:

 

 

• Yes—Filter match only established TCP connections

 

 

• No—Filter match both initial and established TCP connections (Default)

 

 

 

 

More

 

In this field, you can determine if you want to pass the packet through the next filter rule

 

 

before an action is taken. Two options are available for this field:

 

 

• Yes

 

 

• No (default)

 

 

If More is Yes, then Action Matched and Action Not Matched is N/A.

 

 

 

 

Log

 

In this field, you can determine if you want to log the results of packets attempting to

 

 

pass the filter rule. These results are displayed on the System Log (see “View Error

 

 

Log” on page 9-4). Seven options are available for this field:

 

 

• None—No packets are logged (default).

 

 

• Action Matched—Only packets that match the rule parameters are logged.

 

 

• Action Not Matched—Only packets that do not match the rule parameters are logged.

 

 

Both—All packets are logged.

 

 

• Check Next Rule (default)

 

 

• Forward

 

 

• Drop

 

 

 

 

Action Matched

 

If the conditions for the filter rule are not met, you can specify what to do with the

Action Not

 

packet. There are three options for this field:

Matched

 

• Check Next Rule (default)

 

 

• Forward

 

 

• Drop

 

 

 

 

8-6

Filter Configuration