How do I disable NFSv3/v2 connections to a FreeBSD NFSv4 server?

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http://serverfault.com – I am using a Kubuntu 11.10 client with a FreeBSD 9.0 server. The server has the following lines in /etc/rc.conf nfs_server_enable="YES" nfsv4_server_enable="YES" nfsuserd_enable="YES" and the following in /etc/exports V4: / / I am not using any type of security other than the default sys to keep this config as simple as possible. From the client, both of these commands successfully mount the exported NFS share: $ sudo mount -t nfs test.home:/ /mnt $ sudo mount -t nfs4 test.home:/ /mnt What can I do on the server end to disable NFSv3 and below so that the following does not work? $ (HowTos)