I have searched and found many things but nothing is working. I have installed Ubuntu 16.04 LTS I can mount a remote CIFS share using user and password ok. using mount //IP.Address/Share /mnt/path -t cifs -o user=username,pass=password

But I have another 3 shares that are simple NAS shares (Freenas) and there is no password, guest access only. trying mount //IP.Address/Share/Path /mnt/path2 -t cifs -o guest

just dumps mount options.

I cannot get the non password protected shares to mount. cifs utils is obviously installed. My aim is to be able to mount these all in fstab.


  • What happens if you pass it a password that it does not need? – jc__ Oct 24 '17 at 14:49
  • I have tried passing guest,options and even using user=root,pass=passwd. it returns: mount error(95): Operation not supported Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) – MrVirtual Oct 25 '17 at 9:10
  • Did you ever get this to work? – jc__ Oct 30 '17 at 14:21
  • I just managed to get this to work. NAS (freenas) configured to use SMB v3.0 as minimum protocol, changed this to ver 2.0 and used the following command to mount: // /mnt/media cifs guest,vers=3.0,iocharset=utf8,sec=ntlm,_netdev 0 0 , note the vers=3.0 and sec=ntlm options. – MrVirtual Nov 2 '17 at 5:24

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