https://linuxhint.com/mount-smb-shares-on-ubuntu/
sudo apt update
sudo apt install cifs-utils
sudo mkdir /media/share
sudo nano ~/.nascreds
username=example_username
password=example_password
sudo chmod 777 ~/.nascreds
sudo mount -t cifs -o rw,vers=3.0,credentials=/home/{USER_NAME}/.nascreds,uid=$(id -u),gid=$(id -g) //192.168.1.103/share /media/share
sudo umount /media/share
# auto mount on system reboot
sudo nano /etc/fstab
//192.168.1.103/share /media/share cifs credentials=/home/{USER_NAME}/.nascreds,rw,uid=1001,gid=1001,forceuid,forcegid,iocharset=utf8,file_mode=0777,dir_mode=0777 0 0