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SonicOS 5.8.1 Administrator Guide
Essentially, NAT translates the IP addresses in one network into those for a different network.
As a form of packet filtering for firewalls, it protects a network from outside intrusion from
hackers by replacing the internal (LAN) IP address on packets passing through a SonicWALL
with a “fake” one from a fixed pool of addresses. The actual IP addresses of computers on the
LAN are hidden from outside view.
This section describes configuring the SonicWALL appliance in the NAT mode. If you are
assigned a single IP address by your ISP, follow the instructions below.
Tip Be sure to have your network information including your WAN IP address, subnet mask, and
DNS settings ready. This information is obtained from your ISP.
Start the Setup Wizard
1. Click the Wizard button on the top right corner of the SonicOS management interface.
2. In the Welcome screen, select the Setup Wizard and then click Next.
Select Deployment Scenario
3. On a SonicWALL TZ series (wired or wireless) appliance, select the appropriate
deployment scenario for your network and then click Next:
• Office Gateway - Provide secure access for my wired and wireless users.
• Secure or Open Access Point - Add secure wireless access to an existing wired network.
When selecting this mode, the wizard will skip over the steps for configuring the LAN
interface.