Chapter 21 · Network Utilities 207 closed network, we don't have a DNS server, so we will click the "Use the following DNS server" but leave those fields blank. When we click "OK," the IP address should be ARP'd-- see "Address Resolution Protocol (ARP)," on page 186--and updated within a few moments. Other types of computers or network devices can be configured in various ways (too numerous to detail here), but, one way or another, you must enter this information for each device on the network, and, of course, you must ensure there are no address conflicts. IPCONFIG C OMMAND On Windows systems, you can see and configure IP related information using a command-line utility called IPCONFIG. By typing ipconfig from the Windows Command Prompt (go Start | Accessories to find it), for example, you would get something like this, enabling you to verify (or discover) the con- figured address: C:\>ipconfig Windows IP Configuration Ethernet adapter Local Area Connection-specific IP Address. . . . . Subnet Mask . . . . Connection: DNS Suffix . . . . . . . . . . . . . . . : : 10.0.0.13 : 255.255.255.0