OpenWRT - Add Samba User

Prerequisite:

1. Assume SAMBA has been installed on your OpenWRT.
2. Assume you have your external HDD mounted on your OpenWRT

Steps:

1. Add user at OS level (reference: https://wiki.openwrt.org/doc/howto/secure.access )
   
1. Add a new user by editing below 3 files, add new user at last line of each file, with below information (assume UID and GID 1000 is unused!):
   

1. /etc/passwd: USER:x:1000:1000:GROUP:/mnt/usb:/bin/false
   /etc/group:  GROUP:x:1000:
   /etc/shadow: USER:xyzDummyString:16666:0:99999:7:::
   

2. Change password by using passwd command:
1. passwd USER
   
   Changing password for USERNew password:
   Retype password:
   Password for USER changed by root
   
3. Add a Samba user with smbpasswd command:
   smbpasswd -a USER
   New SMB password:
   Retype SMB password:
   
4. At LUCI, under "Allowed Users", enter "USER"; uncheck "Allowed Guest" for added security.