On Mon, 8 Mar 2021 at 12:33, Robert McBroom via users <users@lists.fedoraproject.org> wrote:

~]# showmount -e 192.168.1.248
Export list for 192.168.1.248:
/mnt/HD/HD_a2/mcstuffy  *
/mnt/HD/HD_a2/SmartWare *
/mnt/HD/HD_a2/Public    *

Apparently both smb and nfs access are provided to the shares. As was
suggested in another response adding the user and password of the client
system to the NAS allowed access. Also it was suggested that ssh access
had been noted elsewhere. The web page for the NAS provides a check box
to enable ssh access with a disclaimer about any changes voiding the
warranty. To be explored.

See: https://community.wd.com/t/mounting-mycloud-ex2-on-a-linux-desktop/98215

was able to mount the NAS using nfsv4.  

See the client parts of https://fedoraproject.org/wiki/User:Renich/HowTo/NFS

and https://access.redhat.com/solutions/3773891 and leave the server config alone

for now.  The first thing to check is the NFS version support.  On the client run:

# rpcinfo -p <NAS-ip> 

You may need id mapping if user and group ID's differ (to check, use "id username").

Trying the ssh login  gives

~]# ssh -l sshd 192.168.1.248
sshd@192.168.1.248's password:


BusyBox v1.30.1 (2020-09-04 02:41:28 UTC) built-in shell (ash)
Enter 'help' for a list of built-in commands.

root@MyCloudEX2Ultra ~ # help
Built-in commands:
------------------
        . : [ [[ alias bg break cd chdir command continue echo eval exec
        exit export false fg getopts hash help history jobs kill let
        local printf pwd read readonly return set shift source test times
        trap true type ulimit umask unalias unset wait
root@MyCloudEX2Ultra ~ #

Seems like BusyBox has been modified to remove all of the really useful commands. Looked at the list of commands for ash and tried a few but they were not there.  Not even ls