Troubleshooting HelloKeytab.java

Common Exception Messages:

No CallbackHandler available to garner authentication

* Confirm that the keytab file exists
* Confirm principal is correct in login.conf file

No LoginModule configured for...

* Confirm that the LoginModule name between login.conf and HelloKeytab.java match.

Pre-authentication information was invalid (24)

* Check if miss-typed password or wrong password during creation of keytab.

Links:
pre-flight checklist
install guide - tomcat
install guide - jboss
install guide - glassfish
reference docs
api docs
download

Troubleshooting:
HelloKDC.java
hello_spnego.jsp
HelloKeytab.java
hello_delegate.jsp
SpnegoHelloClient.java
ExampleSpnegoAuthenticatorValve.java

Examples:
create keytab for client
create keytab for app server
credential delegation
protected SOAP Web Service
tomcat authenticator valve
jboss authenticator valve

Licensing:
GNU LGPL