I have a new Sonicwall TZ-105 firewall appliance which will be on a small office network and will participate in a site-site VPN. The WAN interface is set to acquire an address via DHCP from the attached cable modem. When I look at the configuration of the firewall, the LAN port has an IP of 192.168.168.168. The WAN interface has an ip address of 192.168.10.1 and I can't figure out where that is coming from. If I go to whatismyipaddress.com it gives me a correct public ip address and everything appears to function normally even with a private IP on the WAN interface. Because the WAN port has a private IP, I can't manage the device over the Internet, do any port forwarding nor connect it to the VPN. Why is the sonicwall giving the WAN interface a private IP address? Does it need to be in some other mode? I believe I chose the default setting, which was WAN/LAN switch.