У вашего броузера проблема в совместимости с HTML5
Easy file sharing with Samba on Debian Linux
[share name]
comment = example share
guest ok = no //// only permited users can browse the shared folder
read only = no
valid users = user1 //users that can browse the shared folder, if you use guest ok = yes you do not need this line
Add user to Samba:
adduser user1
smbpasswd user1