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Vigor2750 Series User’s Guide
144
z 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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a
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w
w
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a
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N
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T
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.
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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.