ZyXEL Communications wireless n gigbit router zyxel Manual Do Utilizador

NBG-460N User’s Guide

Use the screens in this chapter to enable and configure the firewall that protects 
your NBG-460N and your LAN from unwanted or malicious traffic.

Enable the firewall to protect your LAN computers from attacks by hackers on the 
Internet and control access between the LAN and WAN. By default the firewall:

• allows traffic that originates from your LAN computers to go to all of the 

networks. 

• blocks traffic that originates on the other networks from going to the LAN. 

The following figure illustrates the default firewall action. User A can initiate an IM 
(Instant Messaging) session from the LAN to the WAN (1). Return traffic for this 
session is also allowed (2). However other traffic initiated from the WAN is 
blocked (3 and 4).

Figure 121   Default Firewall Action

• Use  the  General screen (

) to enable or disable the 

NBG-460N’s firewall, and set up firewall logs.

3
4

1
2