ZyXEL Communications B-2000 User Manual

ZyAIR B-2000 Wireless LAN Gateway with 4-Port Switch

Filter Configuration

7-3

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.

7.2 Configuring a Filter Set

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

Step 1. Enter 21 in the main menu to display Menu 21 – Filter Set Configuration.

Figure 7-3 Menu 21 – Filter Set Configuration

Step 2. Type the filter set to configure (no. 1 to 12) and press [ENTER]

Step 3. Type a descriptive name or comment in the Comments field and press [ENTER].

Step 4. Press [ENTER] at the message

“

Press ENTER to confirm…” to display Menu 21.1 – Filter

Rules Summary (that is, if you selected filter set 1 in menu 21).

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

Menu 21 - Filter Set Configuration

Filter Filter

Set # Comments Set # Comments

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

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