The output of the default command contains the IP address, network mask and gateway for all physical and virtual network adapters.ipconfig supports several command line options as described below. Additionally, it displays DNS and WINS settings for each adapter.
Internal network names are computer and other device names on your internal network.
ipconfig is an alternative to the older 'winipcfg' utility.
From the command prompt, type 'ipconfig' to run the utility with default options. This option displays the same IP addressing information for each adapter as the default option.
VPN clients connect to the ISA Server firewall/VPN server with the goal of accessing resources on the internal network.
VPN clients will not be able to access these resources using a DNS host name if the client cannot properly resolve that name to an IP address.