By Nancy Cox
To optimally layout and deal with a listing provider, IS architects and bosses needs to comprehend present state of the art items. listing providers covers Novell's NDS eDirectory, Microsoft's energetic listing, UNIX directories and items via NEXOR, MaxWare, Siemens, severe direction and others. listing layout basics and items are woven into case reviews of enormous company deployments. Cox completely explores replication, protection, migration and legacy approach integration and interoperability. company matters resembling tips on how to fee justify, plan, finances and deal with a listing venture also are incorporated. The publication culminates in a visionary dialogue of destiny traits and rising listing applied sciences together with the strategic path of the head listing items, the impression of instant expertise on listing enabled purposes and utilizing directories to customise content material supply from the company Portal. listing companies is a complete and functional advisor that offers enterprises and specialists with a roadmap used to create the listing enabled worldwide company. to supply the reader with the middle wisdom required for designing listing providers, the booklet discusses listing basics together with X.500, X.509 and LDAP in addition to tips on how to price justify, plan, finances and deal with a listing venture offers serious details for layout, integration, or migration for a number of messaging platformsCovers all significant directories offers case reports and guidance for deployment and integration concerns
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Additional info for Directory Services: Design, Implementation and Management (Enterprise Computing)
0, there is no need to set up other DNS replication mechanisms. The same is true for the replication topology; DNS can use the same replication topology as that used for AD replication. Contrary to the classical DNS replication model, AD replication uses a multimaster replication model. A major advantage of a multimaster model is that it eliminates a possible single point of failure: the primary zone server. AD integrated DNS does not use the concept of secondary zones; all zones are considered primary zones (at least on Windows 2000 DCs—a member server running a DNS server can still host a secondary copy of an AD integrated zone).
A common schema. The schema defines all the objects in the forest and is composed of classes and attributes. A common Global Catalog (GC). Global catalogs are discussed later in this section. 3 Flexible single-master operation roles Windows 2000 supports multimaster replication of directory data. This means that any DC in the domain can be used to modify the values of an object. Replication then occurs between DCs to update all the DCs with the latest data for the object. 6 Trust relationships 11 exists in a multimaster replication model.
The protection is usually provided by a firewall or set of firewalls located between the intranet and extranet portion of the DNS infrastructure. Also, in most cases the choice for hidden internal host names and zones is coupled with the choice of the private IP addressing scheme. com. Digital used global IP addresses and allowed DNS queries to go through the firewall. After the merger, Compaq reorganized both its own and the Digital namespaces. net. net domain name. Unlike Digital, Compaq uses a hidden internal DNS system: DNS queries coming from the Internet are not allowed to go through the firewall.