TrueNAS

Go to Datasets and add new Dataset. Go to Shares tab and under Windows (SMB) Shares press Add button and name new share to be created. Confirm and enjoy your new share.

Windows

Open file explorer and go to This PC. At the top bar select Map network drive. Select letter of your choice for the new drive. Inside Folder text block type \\192.168.XXX.XXX\[YOUR_SHARE_NAME]. Make sure to tick the Reconnect at sign-in and Connect using different credentials checkboxes. Then click Finish. You will now see a prompt asking for a user name and password. Tick the Remember my credentials checkbox.

Debian

Create a credentials file somewhere in the system, in my case it’s /root/smbcredentials. The content of this file should look like this:

user=[INSERT_USERNAME]
password=[INSERT_PASSWORD]

Open /etc/fstab file and add new line at the end that should look like this:

//192.168.XXX.XXX/[YOUR_SHARE_NAME] /mnt/[YOUR_SHARE_NAME] cifs credentials=/root/smbcredentials,uid=1000,gid=1000,noauto,x-systemd.automount 0 0

Reboot the OS and the volume should be mounted at the specified location.