TCP/IP parameters for the hosts that are used as the domain server and as the FTP server must be configured manually (its IP address must not be changed):
IP address — we will use the 192.168.1.2 address (refer to chapter 2.5 DHCP Server Configuration),
Default gateway — use IP address of the appropriate firewall interface (192.168.1.1),
DNS server — since Microsoft DNS is running on the host, the system sets the local loopback address (loopback — 127.0.0.1) as the primary DNS server.
Set automatic configuration of both IP address and DNS server (using DHCP) at all workstations (it is set by default under most operating systems).