Security Policies in Web Services
Security is of fundamental concern in computing systems. This chapter covers the role of security policies in Web services. First, it examines the importance of policies in web services and explains the WS-Policy standard. It also highlights the relation of WS-Policy with other WS-* specifications. Next, it covers different facets of security requirements in SOA implementations. Later, it examines the importance of security policies in web services. It also presents the basic concepts of WS-Security policy language. WS-Security policy specification specifies a standard way to define and publish security requirements in an extensible and interoperable way. A service provider makes use of security policy to publish the security measures implemented to protect the service. Security policies can also be made customizable to meet the security preferences of different consumers. Towards the end, it discusses about the governance of security polices and also future trends in security policies for web services.