CentOS - Sep 2010 - trouble mounting NFS share in net install

I am trying to install the net install version of 5.5 from an NFS
share that I setup with freenas. I have fully functioning DNS (hosted
on freebsd) and can mount the iso share on another centos box with the
command mount nas.mydomain.com:/mnt/iso1 /mnt/iso1 on that machine.

The nas host in question is a freenas which I believe is NFS 4. I can
/ will verify if someone would care to respond to this thread.

but when I go to do the same thing in the centos net install I get an
error stating simply: "that directory cannot be mounted from the
server".

in the settings I have the following values:

NFS server name: nas.example.com
CentOS directory: /mnt/iso1
NFS mount options (optional):


I have also tried it by ip just to be sure:

NFS server name: 192.168.1.250
CentOS directory: /mnt/iso1
NFS mount options (optional):



Does anyone have any suggestions that can help me get going?

Thanks

> The nas host in question is a freenas which I believe is NFS 4. I can
> / will verify if someone would care to respond to this thread.
>
> but when I go to do the same thing in the centos net install I get an
> error stating simply: "that directory cannot be mounted from the
server".
Is the FreeNAS configured to permit the new machine you are building
to mount the share?

http://freenas.org/documentation:setup_and_user_guide:services_nfs_shares
shows where the settings for that are...

M