Is this a secure setup?
Having an (linux based) Owncloud Server, with Let's-Encrypt SSL Certificate. This server provides shares to the clients, which are SMB connections to an internal File Server
The connection is as follows:
DNS Entry --> points to private, public IPv4 Address.
This address has an open port in the firewall, forwarding to the IP in DMZ. HTTPs and WWW are allowed
The SMB connection directs to an internal File server, which is in the internal network segment. only port 445 TCP is allowed
connections are HTTPs
Necessary maintenance:
- update owncloud
- update the linux server and file server
- maintain the firewall
of course as well:
- monitoring and backup
- awarenes of users and admins (maybe most critical point)