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CAS is written to execute within a standard Java 1.5 Runtime Environment. Versions previous to 3.1 only required Java 1.4. As CAS aims to operate in a self-contained manner, there is no need to place any special configuration files into your Java Runtime Environment. The only exception to this is if you are using a Java Authenticaton and Authorization Service (JAAS) policy file.
Out of the box, CAS, with its example JSP pages, is CAS provides an example user interface that's designed to run on a in any container that supports the Servlet 2.4 specification. A good container is the Tomcat 5.x series, though any Servlet 2.4 will work. In addition, by modifying the JSP pages to use the old JSTL tags, one can get CAS to run on a Servlet 2.3 container such as Tomcat 4.x. However, in many cases it is not worth the effortCAS will run on earlier versions of Tomcat e.g. 4.x if the older style JSTL tags are used. It would be easier to use the newer Tomcat version.
Tightly Coordinated Actions
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