9. Securing Web Services

IN PART I, “WEB SERVICES BASICS,” you saw how SOAP enables applications to interact with each other, and how Web Services Definition Language (WSDL) and Universal Description, Discovery, and Integration (UDDI) integrate applications among businesses. With Web services technologies, applications can be coupled loosely—that is, in a decentralized manner beyond the enterprise boundary. This situation suggests a new challenge related to security: Most existing technologies are only concerned with how to protect applications within a single security domain image. Soon, however, we’ll have to be concerned with how to federate security ...

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