cannot mount shared folder in ubuntu

[stanj]

I just installed a Buffalo LS-QLV23F. I created a shared folder on a DMZ. From my PC that is not in the DMZ, I can map the Buffalo shared folder to a drive. However, on a Ubuntu system on the DMZ, I cannot mount the shared folder.

 

I get this error..

 

$ sudo mount -t nfs xxx.xxx.xxx.216:shared_folder /mnt/NAS -o rw

 

mount.nfs: access denied by server while mounting xxx.xxx.xxx.216:shared_folder

 

Any ideas?

 

Thanks