User's Manual

UTT Technologies Chapter 8 NAT
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 Bind to: It specifies an Internet connection to which the NAT rule is bound. The LAN
hosts that match the NAT rule will access the Internet through this Internet
connection.
 Description: It specifies the description of the NAT rule.
¾ Save: Click it to save the NAT rule settings.
Note
1. When creating a One2One NAT rule, you should set the Start External IP Address,
and the number of the external IP addresses is the same with the number of internal
IP addresses, which is determined by the Start Internal IP Address and End
Internal IP Address. For example, if the Start Internal IP Address is 192.168.16.6,
End Internal IP Address is 192.168.16.8, and Start External IP Address is
200.200.200.116, then 192.168.16.6, 192.168.16.7, and 192.168.16.8 will be mapped
to 200.200.200.116, 200.200.200.117, and 200.200.200.118 respectively.
2. In order to make both LAN hosts and Internet hosts can access a One2One NAT
rule¶s external IP addresses (that is, public IP addresses), after you finished
configuring the One2One NAT rule, the Device will automatically create the related
static routes and enable NAT proxy ARP (by selecting Nat from Proxy ARP
drop-down list) on the related WAN interface. You can go to the Advanced > Static
Route page to view those static routes in the Static Route List, therein, the static
route¶s Destination IP is a public IP addresses, Gateway IP is the related WAN
interface¶s IP address.
8.3.3.3 Passthrough NAT Rule Settings
Figure 8-10 Passthrough NAT Rule Settings