[ceph-users] CephFS exposing public storage network

Hi all, I'm evaluation cephfs to serve our business as a file share that span across our 3 datacenters. One concern that I have is that when using cephfs and OpenStack Manila is that all guest vms needs access to the public storage net. This to me feels like a security concern. I've seen one suggestion is to put NFS gateways in between to prevent this, I would prefer not having to use NFS. Is there another way to solve this or is this a no concern to others, both the network and NFS? We are a small cloud provider and having different customers exposed to each other on the same storage net seems risky to me. Regards Jaan