A demilitarized zone enables one or more computers to access the outside network unrestricted. You can set up DMZ on SonicWALL in network address translation mode or standard mode. NAT mode assigns private IP addresses to the computers on the network but configures these devices to communicate with the Internet using a single public address. Standard mode disables NAT, requiring all devices that connect to the WAN to use public addresses. The steps to enable DMZ vary depending on which mode your appliance uses. Writer Bio

How to Setup DMZ on SonicWALL - 90