Netgear DGFV338 사용자 설명서

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Basic Installation and Configuration

5. Click Apply to save your settings.

The WAN ports of the ProSafe Wireless ADSL Modem VPN Firewall Router can be configured 
for NAT or Classical Routing. You must select one of them—NAT being the most common:

•

NAT. NAT is the technology which allows all PCs on your LAN to share a single Internet IP 
address. From the Internet, there is only a single device (the Router) and a single IP address. 
PCs on your LAN can use any private IP address range, and these IP addresses are not visible 
from the Internet.The Router uses NAT to select the correct PC (on your LAN) to receive any 
incoming data. 

•

Classical Routing. In this mode, the Router performs Routing, but without NAT. To gain 
Internet access, each PC on your LAN must have a valid Internet IP address. 

If your ISP has allocated many IP addresses to you, and you have assigned one of these 
addresses to each PC, you can choose Classical Routing. Or, you can use Classical Routing for 
routing private IP addresses within a campus environment. Otherwise, selecting this method 
will not allow Internet access through this Router.

Depending on the WAN port configuration of the ProSafe DGFV338, you can select one of two 
options:

•

Auto-Rollover using WAN port. If you have configured both the ADSL ISP and Ethernet ISP 
WAN ports of the ProSafe Wireless ADSL Modem VPN Firewall Router, you can select auto-
rollover for increased system reliability. In this mode, the selected WAN interface is made 
primary and the other is the rollover link. As long as the primary link is up, all traffic is sent 
over the primary link. Once the primary WAN interface goes down, the rollover link is brought 
up to send the traffic.

Note: You can also set up the traffic meter for the Ethernet ISP, if desired, at this time. 

See 

Note: If you only have a single Internet IP address, you MUST use NAT.