The following modules have been ported: mod_alias, mod_auth, mod_autoindex, mod_dav, mod_dav_fs, mod_dir, mod_log_config, mod_mime, mod_rewrite, mod_setenvif. Mod_python has also been ported and integrates with the Python for S60 port and allows you to run Python Server Pages on the server on your phone.
More information about setting up the server and configuration information is available here.
Running a server on your phone is, at the moment, more of a proof of concept demonstration. However it has interesting potential uses. For example it offers away to gain access to information about where the phone is, what is stored on the phone (both contacts and pictures), as well as providing a personal web server that is more intimantly connected to an individual.