login process

[Michael Gustav Simon]

I don't understand the login process in detail!
Why starts the internal redirect from "/login/proxy" (
org.apache.jetspeed.login.LoginProxyServlet) to "/login/redirector" (
org.apache.jetspeed.login.LoginRedirectorServlet) the jetspeed-pipeline
named "LoginPipeline"?
If I call the redirctor directly, the pipeline "LoginPipeline" will not
start.
How does it works?
I need a hint! :-)