Services Screen - ZyXEL Communications NBG334S User Manual

Chapter 12 Firewall
Table 50 Security > Firewall > General
LABEL
Log
Apply
Reset

12.4 Services Screen

Click Security > Firewall > Services. The screen appears as shown next.
If an outside user attempts to probe an unsupported port on your NBG334S, an ICMP response
packet is automatically returned. This allows the outside user to know the NBG334S exists.
Use this screen to prevent the ICMP response packet from being sent. This keeps outsiders
from discovering your NBG334S 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.
130
DESCRIPTION
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.
Click Apply to save the settings.
Click Reset to start configuring this screen again.
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