2.0 1.2 cas http://www.yale.edu/its/tp/cas/version2 Tag library for CAS authentication. auth edu.yale.its.tp.cas.client.taglib.AuthTag JSP var true false scope false false logout edu.yale.its.tp.cas.client.taglib.LogoutTag empty var true false logoutUrl true false scope false false loginUrl edu.yale.its.tp.cas.client.taglib.LoginUrlTag JSP validateUrl edu.yale.its.tp.cas.client.taglib.ValidateUrlTag JSP authorizedProxy edu.yale.its.tp.cas.client.taglib.AuthorizedProxyTag JSP service edu.yale.its.tp.cas.client.taglib.ServiceTag JSP