Chapter 11 Firewall

Table 46

Firewall General

LABEL

 

DESCRIPTION

Log

 

Select whether to create a log for packets that are traveling in the selected

 

 

direction when the packets are blocked or forwarded.

 

 

To log packets related to firewall rules, make sure that Access Control under Log

 

 

is selected in the Logs > Log Settings screen.

 

 

 

Apply

 

Click Apply to save the settings.

 

 

 

Reset

 

Click Reset to start configuring this screen again.

 

 

 

11.4 Services Screen

Click Security > Firewall > Services. The screen appears as shown next.

If an outside user attempts to probe an unsupported port on your ZyXEL Device, an ICMP response packet is automatically returned. This allows the outside user to know the ZyXEL Device exists. Use this screen to prevent the ICMP response packet from being sent. This keeps outsiders from discovering your ZyXEL Device when unsupported ports are probed.

You can also use this screen to enable service blocking, enter/delete/modify the services you want to block and the date/time you want to block them.

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ZyXEL NBG-334SH User’s Guide