While not completely related, can anybody suggest a good, clean way of implementing centralised login under Linux? With yp/nis being out of date (and not consi

While not completely related, can anybody suggest a good, clean way of implementing centralised login under Linux? With yp/nis being out of date (and not considered secure?) most things seem to point to using Kerberos for auth, but how do people then go about syncing passwd or some other method of getting all user accounts consistent across all machines? Then what about files, is nfs still the preferred method of sharing the home directories? Some questions. Sorry