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SONICWALL SONICOS STANDARD 3.0 ADMINISTRATOR’S GUIDE
73
Configuring the DMZ Interface
Configuring NAT Mode
NAT Enabled mode gives the OPT interface a single IP address and a subnet of available IP
address. The IP addresses of devices connecting to the OPT interface are translated to the single
OPT interface IP address.
1
Click the Edit Icon in the line for the OPT interface in the Interfaces table. The OPT Properties
window displays.
2
Select OPT in NAT Mode.
3
Enter an IP address in the OPT Private Address field.
4
Enter the subnet mask in the OPT Subnet Mask field.
5
If you want to use the OPT interface as a DMZ, enter a publicly visible IP address in the
DMZ NAT Many-to-One Public Address field. This address will be visible to the internet for
public servers in your network.
6
Click OK.
Configuring the DMZ Interface
You can configure the DMZ interface in either Transparent Mode or NAT Mode:
• Transparent Mode enables the SonicWALL security appliance to bridge the DMZ subnet onto the
WAN interface. It requires valid IP addresses for all computers connected to the DMZ interface on
your network, but allows remote access to authenticated users. You can use the DMZ interface in
Transparent mode for public servers and devices with static IP addresses you want visible outside
your SonicWALL security appliance-protected network.
• NAT Mode translates the private IP addresses of devices connected to the DMZ interface to a sin-
gle, static IP address.