Just in case anybody is interested, I answered my own question by referenceing the docs (what a concept) :oops:
1.7.4.Â Authorization-Related Tag Libraries
The Acegi Security System for Spring comes bundled with several JSP tag libraries that eases JSP writing. The tag libraries are known as authz and provide a range of different services.
All taglib classes are included in the core acegi-security-xx.jar file, with the authz.tld located in the JAR's META-INF directory. This means for JSP 1.2+ web containers you can simply include the JAR in the WAR's WEB-INF/lib directory and it will be available. If you're using a JSP 1.1 container, you'll need to declare the JSP taglib in your web.xml file, and include authz.tld in the WEB-INF/lib directory. The following fragment is added to web.xml: