new samba config for non-authentication share

smb.conf

[global]
    server role = standalone server
    workgroup = WORKGROUP

    max log size = 1000
    logging = file

    security = user
    map to guest = bad user

    load printers = no
    aio read size = 0 
[mnt]
    comment = mnt
    path = /mnt
    public = yes
    guest ok = yes
    read only = yes

[mnt2]
    comment = mnt2
    path = /mnt2
    public = yes
    guest ok = yes
    read only = no

[mnt3]
    comment = mnt3
    path = /mnt3
    public = yes
    guest ok = yes
    read only = no