[ILUG-BOM] Problem in user authentication

[dataline]

We have installed about 150 Linux boxes as custom servers on a fibre LAN. We need to do the following: Any user should be able to log in to a database server from any m/c on the LAN. Also we have to set a disk quota of 1 MB per user on this dbase server. Please explain how this can be done. As mentioned, we have installed all m/c as custom LInux boxes and not as standard workstations. We are using redhat Linux 6.2. We need information on how this can be acheived.