Microsoft windows 2000 DNS manual Characters in Names, Computer Names

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First it finds that the name myname.zzz.com. is internal, based on the PAC file. Therefore, it submits a query to the assigned DNS server (Step 1). If the cache contains the necessary data, the server will respond to the client. Otherwise, the server will query a root server (Step 2). The root server that contains the “.” zone finds a delegation to the zzz.com. zone and returns a reference to the authoritative server (Step 3). The server uses the IP address of the name server that contains the zzz.com. zone to submit the query (Step 4). Since that server is authoritative for myname.zzz.com., it resolves the query and returns the answer (Step 5). Finally, the server returns response to the client (Step 6).

A computer in the ZZZ Corporation needs to resolve a DNS query for myname.yyy.com. It submits a query to the assigned DNS server (Step 1). If its cache contains the necessary data, the server responds to the client. Otherwise, the server forwards the query to the DNS server containing the zzz.com. zone (Step 2). Since this server contains a secondary copy of the zone yyy.com. it resolves the query and returns it to the client through the previous server (Steps 3-4).

Each of the two suggested solutions has disadvantages associated with it.

The solution of company YYY requires maintenance of the PAC file.

At the same time, the solution of company ZZZ puts a significant load on the internal DNS servers containing top-level private namespace zones. This is because the majority of the queries generated within the company are forwarded to these servers. Moreover, in the case of the same internal and external namespaces, these servers contain larger zones, since they must contain both internal and external names.

Characters in Names

As mentioned above, the standard characters for DNS, according to RFC 1123, are A-Z, a-z, 0-9 and the -. In organizations that have an extensive investment in Microsoft NetBIOS technology, the names conform to the NetBIOS standard. These organizations should seriously consider moving towards DNS standard.

The process of adjusting your naming conventions may prove to be time consuming. In an attempt to ease migration from Windows NT 4.0 NetBIOS names to Windows 2000 DNS names, Windows 2000 DNS includes support for extended ASCII and Unicode characters. However, the support for additional characters can only be taken advantage of in a pure Windows 2000-based network environment, since most third party resolver software, such as Unix or Apple is RFC 1123 standards-based.

Note: If a non-standard DNS name is entered during Windows 2000 DNS setup, the warning message will appear suggesting the standard DNS name.

Computer Names

Windows NT 4.0 and previous versions of the operating system use a NetBIOS name to identify a particular machine on the network. A Windows 2000-based machine can be identified by a NetBIOS name (for down-level interoperability), and

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Contents Windows 2000 DNS Microsoft Corporation. All rights reserved Contents Designing a DNS Namespace for the Active Directory Summary Page DNS Fundamentals Standards and Additional Reading Name Services in WindowsDraft-skwan-gss-tsig-04.txt GSS Algorithm for Tsig GSS-TSIG History of DNSHierarchy of DNS Domain Names Structure of DNSCom Edu Gov Mil Army Microsoft Int/net/orgMit Mydomain DNS and InternetDistributing the Database Zone Files and Delegation TTLMicrosoft My domain ftp Ntserver Replicating the DNS databaseQuerying the Database NEW Features of the Windows 2000 DNSName Server Resolver Root-server Gov Whitehouse.gov Time to Live for Resource Records Updating the DNS DatabaseActive Directory Storage and Replication Integration Active Directory Service Storage ModelWindows 2000 White Paper Replication Model Controlling Access to ZonesZone Type Conversions Protocol Description Incremental Zone TransferZone Log File Dynamic UpdateMaster DNS Server Slave DNS Server Ixfr and DS IntegrationDynamic Update of DNS Records Update AlgorithmDhcp Client Mixed EnvironmentSecure Dynamic Update Statically Configured ClientRAS Client Client ReregistrationEstablishing a security context by passing security tokens Secure Dynamic Update Policy Controlling Update Access to Zones and Names DnsUpdateProxy GroupAging and Scavenging DNS Admins GroupAging and Scavenging Parameters DefaultEnableScavenging Scavenging Period DescriptionRecord Life Span Scavenging Algorithm Configuring Scavenging ParametersInteroperability Considerations Unicode Character SupportDomain Locator Finish IP/DNS Compatible Locator DNS Record Registration and Resolver RequirementsLdap.tcp.dc.msdcs.DnsDomainName Kerberos.tcp.dc.msdcs.DnsDomainName IP/DNS DC Locator Algorithm Finish Discovering Site specific DCsCaching Resolver Fully-Qualified Query Name ResolutionUnqualified Single-Label Query Using Global Suffix Search OrderUnqualified Multi-Label Query Using Primary and Per-adapter Domain NamesUnqualified Single-Label Query Scenarios Name Resolution ScenariosMicrosoft Implementation of Negative Caching Fully-Qualified Query ScenariosDNS Server List Management Negative CachingWMI Support for DNS Server Administration Administrative ToolsDNS Manager Using Wins and Winsr Records Interoperability IssuesUsing UTF-8 Characters Format Receiving Non-RFC Compliant Data DNS Server PerformanceUtilization Hardware components Sizing Server Capacity PlanningChoosing Names Internet Access ConsiderationsWindows 2000 White Paper Windows 2000 White Paper Windows 2000 White Paper VPN Com Yyy.com Zzz.com Windows 2000 White Paper Primary Zone YYY corporation ZZZ corporation VPN Firewall Computer Names Characters in NamesPer-Adapter Naming Full computer nameIntegrating ADS with Existing DNS Structure Domain name and sites. Active Directory domain name DNS Migration to Windows 2000 DNSPartitioning, and Replication Choosing your Zones Deploying DNS to Support Active DirectoryWins Referral Using Automatic ConfigurationIxfr Ixfr For More InformationWindows 2000 White Paper
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