enable SSO on my j2ee project deployed on Portal & authenticated with UME

Hello experts,

I have a j2ee project deployed on portal server, and security has configured in web.xml, I also change the security provider in VA to enable the authentication with UME, this all works fine.

In my mind, this configuration should support SSO, that is, if I logon portal, I can also logon my j2ee application without authentication, and vice versa. But I failed, it seemed they are seperated, this is what i do not want.

How can I configure this? because I need to embed another application of portal in my j2ee application, and I also do not want to make my j2ee app to an iview.

Thank you,

William