ZyXEL Communications wireless n gigbit router zyxel General Firewall Screen, Services Screen, 182

Chapter 13 Firewall

13.4 General Firewall Screen

Use this screen to enable or disable the NBG-460N’s firewall, and set up firewall logs. Click Security > Firewall to open the General screen.

Figure 123 Security > Firewall > General

The following table describes the labels in this screen.

Table 62 Security > Firewall > General

LABEL	DESCRIPTION
Enable Firewall	Select this check box to activate the firewall. The NBG-460N performs
	access control and protects against Denial of Service (DoS) attacks
	when the firewall is activated.
Packet Direction	This is the direction of travel of packets.
	Firewall rules are grouped based on the direction of travel of packets to
	which they apply.
Log	Select whether to create a log for packets that are traveling in the
	selected direction when the packets are blocked (Log All) or forwarded
	(Log Forward). Or select Not Log to not log any records.
	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.

13.5 Services Screen

If an outside user attempts to probe an unsupported port on your NBG-460N, an ICMP response packet is automatically returned. This allows the outside user to know the NBG-460N exists. Use this screen to prevent the ICMP response packet from being sent. This keeps outsiders from discovering your NBG-460N when unsupported ports are probed.

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NBG-460N User’s Guide