Example filter, 3 example filter – ZyXEL Communications ZYWALL10 User Manual

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ZyWALL 10 Internet Security Gateway

Filters

7-13

7.3 Example

Filter

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

Figure 7-12 Telnet Filter Example

Step 1.

Enter 21 from the main menu to open Menu 21.1 - Filter Set Configuration.

Step 2.

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

Step 3.

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

Step 4.

Press [ENTER] at the message [Press ENTER to confirm] to open Menu 21.1.1 - Filter Rules
Summary.

Step 5.

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.