ZyXEL Communications P-793H User Manual

Chapter 30 Filter Configuration

P-793H User’s Guide

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

Figure 194   Telnet Filter Example

1 Enter 21 from the main menu to open Menu 21 - Filter and Firewall Setup.
2 Enter 1 to open Menu 21.1 - Filter Set Configuration.
3 Enter the index of the filter set you wish to configure (say 3) and press [ENTER]

.

4 Enter a descriptive name or comment in the Edit Comments field and press [ENTER].
5 Press [ENTER] at the message  [Press ENTER to confirm] to open Menu 21.1.3 - Filter 

Rules Summary.

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.

Action 

Matched

Select the action for a packet matching the rule.
Options are Check Next Rule, Forward and Drop.

Action Not 

Matched

Select the action for a packet not matching the rule.
Options are Check Next Rule, Forward and Drop.

Once you have completed filling in Menu 21.1.1.1 - Generic Filter Rule, press [ENTER] at the 

message “Press ENTER to Confirm” to save your configuration, or press [ESC] to cancel. This data will 

now be displayed on Menu 21.1.1 - Filter Rules Summary.

Table 117   Menu 21.1.1.1: Generic Filter Rule (continued)