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.