In the network system built with Windows NT4.0, the unique identification information for each host is its NetBIOS name. The system can use the WINS service, broadcast and Lmhost files to resolve the NetBIOS name to the corresponding IP address, thus achieving information communication. In such a network system, it is very convenient and fast to realize information communication by using NetBIOS name. However, the unique identification information for a host on the Internet is its domain name in FQDN format (such as www.microsoft.com). In the Internet, the DNS standard is used to resolve the domain name to the corresponding IP address. If the network system built by Windows NT4.0 is connected to the Internet, each host in the NT network also has a corresponding domain name. The resolution of the domain name is implemented by the DNS service supported by Windows NT4.0. Configuring and implementing DNS in Windows NT 4.0 is entirely manual, planned, designed, and implemented. It can be seen from the above that in the Windows NT 4.0 network system, each host has both a NetBIOS name and a domain name, and the actual meaning is basically the same.
in Windows 2000 Active Directory, the basic unit is a domain (Domain), via patterns parent and child domains of the domain tree organized form, is completely two-way trust relationship between the parent and child domains And the trust relationship is passed. Its organizational structure is similar to that of the DNS system. The naming policy in the Active Directory is basically implemented according to the Internet standard. According to the DNS and LDAP3.0 standards, the domain in the Active Directory and the domain in the DNS system adopt the same naming method, that is, the domain name in the Active Directory is the DNS domain name. . Then in the Active Directory, relying on DNS as a location service, the name is resolved to an IP address. Therefore, when we use Windows 2000 to build Active Directory, we must also install and configure the corresponding DNS. Whether users implement IP address resolution or login authentication, they use DNS to locate the server in Active Directory.
tight integration with Active Directory DNS system, which means that the Active Directory is very suitable for the Internet and Intranet environments. This is also a reflection of Microsoft's idea of creating a network operating system for the Internet. Enterprises can connect Active Directory directly to the Internet to simplify communication with customers and partners. In addition, the DNS service in Windows 2000 allows customers to dynamically update resource records using the DNS Dynamic Update Protocol (RFC 2136). Improve the performance of DNS management by reducing the time it takes to manually manage these same records. Computers running Windows 2000 can dynamically register their DNS names and IP addresses.
Because Active Directory and DNS have been integrated, so in Windows 2000 NetBIOS name has gradually lost its meaning, and this corresponds to the WINS service is also in the process of slowly being phased out in. In Windows NT, in order to effectively exploit the dynamic nature of WINS, we usually integrate DNS with WINS to get more accurate analysis results. In Windows 2000, this integration became unnecessary because of the support for the Dynamic Update Protocol (RFC 2136).
any development of things are from simple to complex, and then follow a unified standard evolved into a complex, likely to be widely accepted by the public. DNS, which is composed of a series of Interpretation Requests (RFCs) standards, widely adopted on the Internet, has become a unified standardized specification in network technology. Windows 2000's goal is to be widely used in Internet and intranet environments, so its name resolution model should fully comply with a single DNS standard. I think that Windows 2000 Active Directory is closely integrated with DNS, which provides a good foundation for the widespread use of Windows 2000.