Quick Reference Guide

Reference Guide for the Model RT338 ISDN Router

9-4 Configuring Filters

For more information about filter rules, see “Configuring a Filter Rule,” on page 9-5.

If the filter type is IP (TCP/IP), the abbreviations listed in Table 9-2 are used.

If the filter type is GEN (generic), the abbreviations listed in Table 9-3 are used.

To configure a specific filter rule, select the number of the filter rule (1–6) that you want to

configure and press [Enter] to display Menu 21.1.1 - TCP/IP Filter Rule.

Table 9-1. Filter Rules Summary Abbreviations

Abbreviation Description

# Refers to the filter rule number (1–6).

A Refers to Active. Y means the filter rule is active, and N means the filter rule is

inactive.

Type Refers to the type of filter rule and can display GEN for generic or IP for TCP/IP.

Filter Rules The filter rule parameters are displayed here.

M Refers to More. Y means there are more rules to check. N means there are no rules to

check.

m Refers to Action Matched. F means to forward the packet, D means to drop the

packet, and N means to check the next rule.

n Refers to Action Not Matched. F means to forward the packet, D means to drop the

packet, and N means to check the next rule.

Table 9-2. Filter Type IP Abbreviations

Abbreviation Description

Pr Protocol

SA Source Address

SP Source Port number

DA Destination Address

Table 9-3. Filter Type GEN Abbreviations

Abbreviation Description

Off Offset

Len Length

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