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To configure a site you must create the site, create a subnet and associate it with site, create or move a domain controller object into the site, and designate a site license server for the site. When you install Active Directory on the first domain controller in the domain, a site object named Default-First-Site-Name is automatically created in the Sites con tainer on the Active Directory Sites And Services console. Subnet information is used to find a domain controller in the same site as the com puter that is authenticated during the logon process, and is used during Active Directory replication to determine the best routes between domain controllers. Each site must have at least one subnet, but a subnet can be assigned to only one site. When you install additional domain controllers in an Active Directory domain, they are installed either into the site of the source domain controller (assuming the IP address maps to the site) or into an existing site. For optimum network response time and application availability, place at least one domain controller in each site or two domain controllers in each domain.

Understanding the fundamental web services standards (XML, SOAP, and WSDL) is essential to becoming a competent web services developer. However, you ll also need to understand how to implement web services in software. Numerous web services platforms allow you to build production systems based on the web services standards, including .NET, Perl, and Java EE. The focus of this book is obviously the Java EE platform, and specifically, support for web services in EJB. The next chapter explains how JAX-WS and its precursor (JAX-RPC) are used to support web services in Enterprise JavaBeans.

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The certificate chaining process is managed across the Internet by including the root CA certificate in the certificate store of the browser, and hence, on Windows systems, in the certificate store of the computer. When the browser is first installed, the certificate store includes the root CA certificates of public CAs. When the browser connects to any site that has a certificate that can be chained back to a certificate in its certificate store and then authenticated, a secure channel can be negotiated. If an untrusted certificate (that is, the root CA certificate is not in the store) is presented, it is rejected. However, if the root CA is not present in the Trusted Root or Untrusted Root containers, the user will be prompted to select whether to trust the certificate. The user, in many cases, can accept the certificate without proof of trust, but that is another story.

This lesson introduces you to the tasks involved in the configuration of intersite repli cation. By creating site links and configuring their cost, replication frequency, and rep lication availability, you provide Active Directory with information about how to use these connections to replicate directory data. Optionally, you can also designate a pre ferred bridgehead server, create site link bridges, and create and configure connection objects to meet your organization s replication needs.

Support for web services in EJB 31 is based on the Java API for XML-based Web Services (JAX-WS) 21 specification, as well its predecessor, the Java API for XMLbased RPC (JAX-RPC) 11 The name was changed primarily to avoid the common misconception that web services are only about RPC Other specifications included in EJB 31 are the SOAP with Attachments API for Java (SAAJ) and the Java API for XML Registries (JAXR) JAX-WS and JAX-RPC are similar to RMI and CORBA, except they use the SOAP protocol; SAAJ is an API for manipulating the structure of a SOAP message; and JAXR allows you to access web services registries, usually UDDI Although this chapter and 20 provide you with a launching pad for learning about web services in Java EE (specifically EJB), the subject is too huge to cover in a book about EJB.

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Create site links Configure site link attributes Designate a preferred bridgehead server Create site link bridges Create and configure connection objects

To configure intersite replication you must complete the following tasks: 1. Create site links. 2. Configure site link attributes. 3. Designate a preferred bridgehead server (optional). 4. Create site link bridges (optional). 5. Create and configure connection objects (optional).

What prevents the acceptance of a certificate from another certificate hierarchy, and what needs to be done to guarantee its acceptance Although major public CA certifi cates are present in the certificate store of the Windows computer, CA certificates from private CAs are not. Therefore, when a certificate from another hierarchy is not accepted, it is because it comes from a source that is not yet trusted. To ensure that a certificate from another certificate hierarchy can be accepted, you must make sure that the certificate is trusted and, depending on the application, that a certificate chain is available. To do this, you can do one of the following: