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The SonicWALL can receive an IP address from a DHCP server on the Internet. If your ISP did not provide you with a valid IP address, and instructed you to set your network settings to obtain an IP address automatically, enable NAT with DHCP Client. This mode is typically used with Cable and DSL connections.
To obtain IP settings dynamically, complete the following instructions.
Select NAT with DHCP Client from the Network Addressing Mode menu.
Enter a unique IP address from your LAN address range in the SonicWALL LAN IP Address field. The SonicWALL LAN IP Address is the address assigned to the SonicWALL LAN and is used for management of the SonicWALL.
Enter your network subnet mask in the LAN Subnet Mask field. The LAN Subnet Mask tells your SonicWALL which IP addresses are on your LAN. The default value, "255.255.255.0", supports up to 254 IP addresses.
Click Update. Once the SonicWALL has been updated, a message confirming the update is displayed at the bottom of the browser window. Once the network settings have been updated, the Status bar at the bottom of the browser window displays "Restart SonicWALL for changes to take effect."
Alert!
When NAT is enabled, designate the SonicWALL LAN IP Address as the gateway address
for computers on the LAN.
Alert!
If you change the SonicWALL LAN IP Address, you must to change the Management
Station IP address to be in the same subnet as the new LAN IP address.
When your SonicWALL has successfully received a DHCP lease, the Network window displays the SonicWALL WAN IP settings.
The Lease Expires value shows when your DHCP lease expires.
The WAN Gateway (Router) Address, SonicWALL WAN IP (NAT Public) Address, WAN/LAN Subnet Mask, and DNS Servers are obtained from a DHCP server on the Internet.
Alert!
Enable and configure the SonicWALL DHCP server or manually configure client
DNS settings to obtain DNS name resolution.
In the WAN/LAN Settings section of Network, you can Renew and Release the SonicWALL WAN IP (NAT Public) Address lease. When you click on Renew, the SonicWALL renews the IP address used for the WAN IP address. Click Release, and the lease is released with the DHCP server.