ZyXEL Communications 642R Series manual Example Filter, Telnet Filter Example

Prestige 642R Series ADSL Router

8.3Example Filter

Let’s look at the third default ZyXEL filter, TELNET_WAN (see Figure 8-6)as an example. Please see the PNC Disk for more example filters. This filter is designed to block outside users from telnetting into the Prestige.

Figure 8-13 Telnet Filter Example

Step 1. Enter 21 from the Main Menu to open Menu 21 - Filter Set Configuration.

Step 2. Enter the index of the filter set you wish to configure (in this case, 3) and press [ENTER].

Step 3. Enter a descriptive name or comment in the Edit Comments field (in this case TELNET_WAN) and press [ENTER].

Step 4. Press [ENTER] at the message: [Press ENTER to Confirm…] to open Menu 21.3 - 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:

Filter Configuration 8-17