Use the "ro" option in your /etc/exports file.
For example:
Code:
/home/jschiwal/podcasts *.jesnet(ro,root_squash,sync,no_subtree_check)
On the client, you can run "/usr/sbin/showmount --exports to list the exports on the server:
Code:
/usr/sbin/showmount hpmedia --exports
Export list for hpmedia:
/media/La-Cie-bigdisk *.jesnet
/home/jschiwal/podcasts *.jesnet
/home/jschiwal/downloads *.jesnet
/home/jschiwal/Documents *.jesnet
There is also a man 5 exports manpage as well as manpages for mount.nfs and fstab.
Some distro's have an nfs server and nfs client gui configuration tool you could use as well.