To mount a network share folder, is easier using the GUI, but sometimes while using SSH terminal in to the box, is better to know the command line how to connect network share using commands.
Install CIFS packages
$ sudo apt-get install cifs-utils
Create mounting folder
$ sudo mkdir /mnt/nas_share
Mount the remote share
$ sudo mount -t cifs -o user=[username] //[server_ip]/[share_folder] /mnt/nas_share
Mount the remote share using fstab
$ sudo nano /etc/fstab
add the following line to the end
//[server]/[share_folder] /[mnt]/[mountfolder] cifs user=[username],pass=[password] 0 0
e.g.
//server/sahre /mnt/mountfolder cifs user=alex,pass=password 0 0
Reload fstab
$ sudo mount -av