Netgear FVS338 참조 매뉴얼

Introduction

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The FVS338 VPN firewall 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.

•

Port Forwarding with NAT

 

Although NAT prevents Internet locations from directly accessing the PCs on the LAN, the 
firewall allows you to direct incoming traffic to specific PCs based on the service port number 
of the incoming request. You can specify forwarding of single ports or ranges of ports.

•

Exposed Host (Software DMZ)

 

Incoming traffic from the Internet is normally discarded by the firewall unless the traffic is a 
response to one of your local computers or a service for which you have configured an 
inbound rule. Instead of discarding this traffic, you can have it forwarded to one computer on 
your network.

With its internal 8-port 10/100 switch, the FVS338 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 firewall incorporates Auto Uplink

TM

 technology. Each Ethernet port will automatically sense 

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 will then configure itself to the 
correct configuration. This feature also eliminates the need to worry about crossover cables, as 
Auto Uplink will accommodate either type of cable to make the right connection.

The FVS338 VPN firewall supports the Transmission Control Protocol/Internet Protocol (TCP/IP) 
and Routing Information Protocol (RIP). For further information about TCP/IP, refer to