UTT Technologies
Chapter 7 Advanced
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Page 76
6.1.3.4.2 An Example for Configuring a One2One NAT Rule
1. Requirements
In this example, a business has a single static IP Internet connection, and obtains eight
public IP addresses (202.1.1.128/29 - 202.1.1.1.135/29) from the ISP. Therein,
202.1.1.129/29 is used as the Internet connection’s gateway IP address, 202.1.1.130/2 is
used as the Gigabit Router’s WAN1 IP address. Note that 202.1.1.128/29 and
202.1.1.1.135/29 cannot be used as they are the subnet number and broadcast address
respectively.
The business wants its employees to share a single public IP address of 202.1.1.130/29
to access the Internet; and it wants its four local servers to provide services for the outside
users. The LAN subnet is 192.168.1.0/24. The four local servers IP addresses are from
192.168.1.200/24 to 192.168.1.203/24.
2. Analysis
Firstly we need to configure a static IP Internet connection on the WAN1 interface in the
Network > WAN
page or through the
Start > Setup Wizard
. After you have configured
the Internet connection, the Gigabit Router will automatically create a related system
reserved EasyIP NAT rule, and also enable NAT.
Secondly, we need to create a One2One NAT rule for the four local servers. The IP
addresses of the four local servers are mapped to 202.1.1.131/29, 202.1.1.132/29,
202.1.1.133/29, 202.1.1.134/29 respectively. Thus the outside users can use these public
addresses to access the local servers through the Gigabit Router.
3. Configuration Steps
Here we only describe how to create the
One2One
NAT rule.
Step 1
Go to the
Advanced > NAT > NAT Rule
page, and click the
Add
button to go to
the
NAT Rule Settings
page, see the following figure.
Step 2
Enter
Example2
in the
Name
text box.
