Authentication

[Udayini]

Hi,   I would like to have some information related to the working of Apache while authenticating the client.   I have studied some tutorials on Apache but could not get the clear concept.   When the request from a client comes to the Apache server in the form of webdav/http , which of the modules , mod_dav or mod_auth_db receives the request and authenticates or how the authentication happens actually?   Thank You for your time Udayini