Draytek 2130 사용자 설명서

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Vigor2130 Series User’s Guide 
51
Enhance security of the internal network by obscuring the IP address. There are 
many attacks aiming victims based on the IP address. Since the attacker cannot be aware 
of any private IP addresses, the NAT function can protect the internal network. 
On NAT page, you will see the private IP address defined in RFC-1918. Usually we use the 
192.168.1.0/24 subnet for the router. As stated before, the NAT facility can map one or 
more IP addresses and/or service ports into different specified services. In other words, the 
NAT function can be achieved by using port mapping methods. 
Below shows the menu items for NAT. 
 
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Hardware-base Acceleration Engine, also named Protocol Processing Engine API is the 
function that Draytek provides to extremely speed up the NAT performance. 
While the hardware acceleration mechanism is activated, most of the bandwidth usage will 
be concentrated on the specific sessions which increase transmission speed to get ultimately 
accelerated. 
With Hardware NAT, LAN to WAN NAT throughput can be over 900M bps. But be sure that 
your PC has Giga Ethernet and connect with CAT6 Ethernet cable. 
 
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Open Ports allows you to open a range of ports for the traffic of special applications.   
 
Common application of Open Ports includes P2P application (e.g., BT, KaZaA, Gnutella, 
WinMX, eMule and others), Internet Camera etc. Ensure that you keep the application 
involved up-to-date to avoid falling victim to any security exploits. 
To add a new open port, click Add new entry.