Security was, is, and will be one of the most important aspects of Enterprise Applications and one of the most challenging areas for architects, developers, and administrators. It is mandatory for Java EE application developers to secure their enterprise applications using Glassfish security features. Learn to secure Java EE artifacts (like Servlets and EJB methods), configure and use GlassFish JAAS modules, and establish environment and network security using this practical guide filled with examples. One of the things you will love about this book is that it covers the advantages of protecting application servers and web service providers using OpenSSO. The book starts by introducing Java EE security in Web, EJB, and Application Client modules. Then it introduces the Security Realms provided in GlassFish, which developers and administrators can use to complete the authentication and authorization setup. In the next step, we develop a completely secure Java EE application with Web, EJB, and Application Client modules.