Configuring Network SettingsNokia IP40 User Guide 73! If you changed the internal network range to X.X.X.X, the IP address of the IP40 ischanged to X.X.X.1! If you chose to reset the network to its default settings, the settings are reset.5. Do one of the following:! If your computer is configured to obtain its IP address automatically (using DHCP), andthe DHCP server in your IP40 is enabled, restart your computer. Your computer obtainsan IP address in the new range.! Otherwise, manually reconfigure your computer to use the new address range using theTCP/IP settings.Enabling/Disabling Hide NATNetwork Address Translation (NAT) enables you to share a single IP address among severalcomputers.NoteNAT can only be disabled in IP40 Satellite X licenses. NAT is enabled by default. If NAT isdisabled, you need to buy an IP address range.To enable NAT1. In the Navigation Bar, click Network > My Network.The My Network page appears.2. Select Enabled.3. Click Apply.NAT is enabled.Configuring a DMZ NetworkIn addition to the LAN network, IP40 allows you to define a second internal network called aDMZ (Demilitarized Zone) network. By default, all traffic is allowed from the LAN network tothe DMZ network, and no traffic is allowed from the DMZ network to the LAN network. Youcan customize this behaviour by creating Firewall user rules.For example, you could assign your company’s accounting department to the LAN network andthe rest of the company to the DMZ network. The accounting department would be able toconnect to all company computers, while the rest of the employees would not be able to accessany sensitive information on the accounting department computers. You could then createfirewall rules that allow specific DMZ computers (such as a manager’s computer) to connect tothe LAN network and the accounting department.
