Is there an alternative to this module? Problem is it requires to provide password. But it's not very convenient in situations when you need to check a pair username/password with someone external call for example.
Well, I know that's a solution is rewriting the very login module. But it's not clear what's needed in it and what's not.
Read about the bundled login modules from admin and devl guide online by following the 'Free Online JBoss Documentation' link from here:
http://www.jboss.org/docs/index