ZyXEL Communications Corporation P660HNT1AV2 User Manual

 Chapter 14 Firewall

P-660HN-Tx(A) v2 User’s Guide

Use this screen to set the default action that the firewall takes on packets that do not match any of 
the firewall rules. Click Security > Firewall > Default Action to display the following screen.

Security > Firewall > Default Action 

The following table describes the labels in this screen.

Security > Firewall > Default Action

Packet Direction

This is the direction of travel of packets (LAN to Router, LAN to WAN, WAN to Router, 
WAN to LAN).

Firewall rules are grouped based on the direction of travel of packets to which they apply. 
For example, LAN to Router means packets traveling from a computer/subnet on the 
LAN to the ADSL Router itself. 

Default Action

Use the drop-down list boxes to select the default action that the firewall is to take on 
packets that are traveling in the selected direction and do not match any of the firewall 
rules. 

Select Drop to silently discard the packets without sending a TCP reset packet or an ICMP 
destination-unreachable message to the sender.

Select Reject to deny the packets and send a TCP reset packet (for a TCP packet) or an 
ICMP destination-unreachable message (for a UDP packet) to the sender.

Select Permit to allow the passage of the packets.

Apply

Click this to save your changes.

Cancel

Click this to restore your previously saved settings.