User's Manual

UTT Technologies Chapter 8 NAT
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Figure 8-14 One2One NAT Rule Settings - Example
Step 3 Enter 202.1.1.131 in the Start External IP Address text box, enter
192.168.16.200 in the Start Internal IP address text box, and enter
192.168.16.203 in the End Internal IP address text box.
Step 4 Select WAN1 from the Bind to drop-down list.
Step 5 Click the Save button to save the settings. Till now you have finished
configuring the NAT rule, and then you can view its related configuration in the
NAT Rule List.
8.3.6.3 An Example for Configuring Passthrough NAT Rule
1. Requirements
In this example, see Figure 8-15, a business has a single static IP Internet connection.
The connection IP address is 202.96.97.2/30, and the FRQQHFWLRQ¶V gateway IP address is
202.96.97.1/30. The business employees will share the IP address of 202.96.97.2/30 to
access the Internet. The LAN¶s subnet number is 192.168.16.0, and subnet mask is
255.255.255.0.
Furthermore, the ISP has assigned a range of IP addresses (from 202.96.100.0/27 to
202.96.100.31/27) to the business. The business wants to assign these public IP
addresses for some local servers, and create a Passthrough NAT rule for these local
servers. Note that 202.96.100.0/27 and 202.96.100.31/27 cannot be used as they are the
subnet number and broadcast address respectively.