Example filter, 3 example filter – ZyXEL Communications Internet Security Gateway ZyWALL 2 Series User Manual

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ZyWALL 2 Series User’s Guide

Filter Configuration

30-13

30.3 Example Filter

Let’s look at an example to block outside users from accessing the ZyWALL via telnet. Please see our
included disk for more example filters.

Figure 30-8 Telnet Filter Example

Step 1. Enter 21 from the main menu to open Menu 21 - Filter and Firewall Setup.

Step 2. Enter 1 to open Menu 21.1 - Filter Set Configuration.

Step 3. Enter the index of the filter set you wish to configure (say 3) and press [ENTER]

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

Step 5. Press [ENTER] at the message [Press ENTER to confirm] to open Menu 21.1.3 - Filter Rules

Summary.

Step 6. Enter 1 to configure the first filter rule (the only filter rule of this set). Make the entries in this

menu as shown in the following figure.