ZyAIR Wireless Gateway Series User’s Guide

You can apply up to four filter sets to a particular port to block various types of packets. Because each filter set can have up to six rules, you can have a maximum of 24 rules active for a single port.

For incoming packets, your ZyAIR applies data filters only. Packets are processed depending on whether a match is found. The following sections describe how to configure filter sets.

The Filter Structure of the ZyAIR

A filter set consists of one or more filter rules. Usually, you would group related rules, for example, all the rules for NetBIOS, into a single set and give it a descriptive name. You can configure up to twelve filter sets with six rules in each set, for a total of 72 filter rules in the system.

24.2 Configuring a Filter Set

To configure a filter set, follow the steps shown next.

Step 1. Enter 21 from the main menu.

Step 2. Enter 1 to display Menu 21.1 – Filter Set Configuration.

 

Menu 21.1 - Filter Set Configuration

 

Filter

Comments

Filter

Comments

Set #

Set #

------

-----------------

------

-----------------

1

NetBIOS_WAN

7

_______________

2

NetBIOS_LAN

8

_______________

3

TEL_FTP_WEB_WAN

9

_______________

4

_______________

10

_______________

5

_______________

11

_______________

6

_______________

12

_______________

Enter Filter Set Number to Configure= 0

Figure 24-3 Menu 21.1 Filter Set Configuration

Step 3. Type the filter set to configure (no. 1 to 12) and press [ENTER].

Step 4. Type a descriptive name or comment in the Comments field and press [ENTER].

Step 5. Press [ENTER] at the message “Press ENTER to confirm…” to display Menu 21.1.1 – Filter Rules Summary (that is, if you selected filter set 1 in menu 21.1).

The following figures show the summary of three filter sets of your ZyAIR.

Filter and Firewall Configuration

24-3