Set home drives to read-only

We would like to set all our home drives to read only.

We use a windows server 2008r2  cluster to present the shares.  The path is  \\cluster\share$\sub-directory\username - could we  just  set the \\cluster\share$ smb permission to "everyone read-only", would that work?

I can also see that there is another share, which is specific to each server in the cluster  - \\server01\sub-directory\username$ . I cannot see these individual shares in the "Share and Storage" management console, but I can browse to them. Is there an easy way to revoke the smb permissions in bulk? how can I retrieve a list of all these shares?