Netgear WGU624 Guide D’Exploitation

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Introduction

The WGU624 wireless router is equipped with several features designed to maintain security, as 
described in this section.

•

PCs Hidden by NAT

 

NAT opens a temporary path to the Internet for requests originating from the local network. 
Requests originating from outside the LAN are discarded, preventing users outside the LAN 
from finding and directly accessing the PCs on the LAN.

•

DMZ Hardware Port

 

A Demilitarized Zone (DMZ) is used by a company that wants to host its own Internet services 
without sacrificing unauthorized access to its private network. 

The DMZ sits between the Internet and an internal network's line of defense, usually some 
combination of firewalls and bastion hosts. Typically, the DMZ contains devices accessible to 
Internet traffic, such as Web (HTTP) servers, FTP servers, SMTP (e-mail) servers and DNS 
servers.

•

Port Forwarding with NAT

 

Although NAT prevents Internet locations from directly accessing the PCs on the LAN, the 
router allows you to direct incoming traffic to specific PCs based on the service port number 
of the incoming request, or to one designated “DMZ” host computer. You can specify 
forwarding of single ports or ranges of ports.

With its internal 8-port 10/100 switch, the WGU624 can connect to either a 10 Mbps standard 
Ethernet network or a 100 Mbps Fast Ethernet network. Both the LAN and WAN interfaces are 
autosensing and capable of full-duplex or half-duplex operation. 

The router incorporates Auto Uplink

TM

 technology. Each Ethernet port automatically senses 

whether the Ethernet cable plugged into the port should have a ‘normal’ connection such as to a 
PC or an ‘uplink’ connection such as to a switch or hub. That port then configures itself to the 
correct configuration. This feature also eliminates the need to worry about crossover cables, as 
Auto Uplink accommodates either type of cable to make the right connection.