Java Security Framework

Question

Security always tends to take the last place in a new project. Or you use a framework like Spring where security is already build-in and can be switched on easily. I try to find

Answer 1

I have done a similar research in JAAS for web application and has ran into a "mind roadblock" until I finally realize JAAS is a framework addressing security at a different "layer" then traditional web applications in the Java World. It is build to tackle security issues in J2SE not J2EE.

JAAS is a security framework build for securing things at a much lower level then web-application. Some example of these things are code and resources available at the JVM level, hence all these ability to set policy files in the JVM level.

However, since J2EE is build on top of J2SE, a few modules from JAAS was reuse in J2EE security such as the LoginModules and Callbacks.

On the other hand, Acegi, aka Spring Security, tackles a much higher "layer" in the securing web-application problem. It is build on top of J2EE security hence J2SE hence JAAS. Unless you are looking to secure resources in the J2SE level (classes, System resources), I don't see any real use of JAAS other than the using the common class and interfaces. Just focus on using Acegi or plain old J2EE security which solves a lot of common web application security problems.

At the end of the day, it is important to learn which "layer" of the J2EE-J2SE security issue you are tackling and choose the write tool(s) for the problem.