Axis2 - Securing WS with External Authentication or SSO

Hi,

I am new to axi2 and have developed a web services. Now I want to use SSO or external authentication module to secure my WS. My WS class is deployed within axis2.war/WEB-INF/services/*.aar files. The question is how to configure axis2 to talk to LDAP server or third party system using FORM or BASIC (don't care) and set user PRINCIPLE which should be accessible within my *.aar file so I can switch my user CONTEXT.

If it is possible at all for anyone to provide a simple example of BASIC authentication using jBoss as an Application Server. I have seen this http://www.coderanch.com/how-to/java/WebServicesHowTo but couldn'y understand.

Your help and comments will be appreciated.

Thanks,

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SJunejo