Single sign on for multiple webapps

[Jyoti Sri]

Hi all,

We have a webapps(3rd party) which uses j_security_check as the authentication mechanisms , i want to integrate & use it with my current web application such that user just have to login in my main application & it should automatically login user for the other application.

I have heard about single sign on ,do i need to use single sign on to achieve this ?If yes , then which mechanism to use (JAAS ?) & how to implement it !

Can some one please suggest any way of acheiving this ?

Thanks in advance

Regards