As a first exercise, I configured CAS 4.2.1 on Tomcat 8 / Java 8 using the
Maven overlay, configuring the resulting cas.war and the sample Java client
webapp (cas-sample-java-webapp) to authenticate against LDAP. I was able to
get this working successfully.
Now that I have this initial configuration working -- which essentially
requires every new webapp to be individually configured to use CAS, I would
like to transition to secure the entire Tomcat container to use CAS to
authenticate against LDAP, such that all deployed webapps are secured with
SSO, without requiring any specific configuration in the deployed webapps.
I have seen references to this in older versions of the CAS / client
documentation, but nothing that really shows definitively how to configure
this, or to hit LDAP. I tried throwing a valve in the server's context.xml
file as follows:
<Valve
className="org.jasig.cas.client.tomcat.v8.Cas20CasAuthenticator"
encoding="UTF-8"
casServerLoginUrl="https://localhost:8443/cas/login";
casServerUrlPrefix="https://localhost:8443/cas";
serverName="localhost"
/>
But this just blows up Tomcat on startup -- every webapp startup fails. So
I have two questions:
1. At this point, is it even possible to set up CAS 4.2.1 on Java 8/Tomcat
8 to authenticate against LDAP using server-wide configuration (i.e. no
deployed web-apps need CAS-specific configuration, in other words, any app
deployed to that Tomcat instance will be secured behind LDAP-authenticated
SSO)?
2. If the answer to #1 is that yes, it is possible, how is this
accomplished in Tomcat config?
Thanks in advance for your help.
Brad
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