The plugin called Members Only(...) may have been useful in restricting access to a WordPress site but it’s getting old now and probably doesn’t work on a WordPress Multisite installation (3.2.1 or higher). So Bobbing Wide are going to look elsewhere.
These appear to be the most popular plugins that you can use to manage user roles and access.
| Plugin name and description | Plugin links: WP,homepage,bw notes | Version, total downloads, last update, tested |
|---|---|---|
| s2Member® Framework (Member Roles, Capabilities, Membership, PayPal Members) s2Member®, a powerful (free) membership plugin for WordPress®. Protect/secure members only content with roles/capabilities. | s2member home ... | 120517 232673 2012-05-17 3.3.2 |
| WP-Members WP-Members™ is a free membership management system for WordPress® that restricts content to registered users. | wp-members home ... | 2.7.4 160571 2012-05-04 3.3.2 |
| Member Access Member Access is a WordPress plugin that allows an administrator to require that users be logged-in in order to view certain posts and pages. | member-access home ... | 1.1.6 79298 2011-12-08 3.3.2 |
| WordPress Access Control Restrict pages, posts, custom post types, menus and widgets to members, nonmembers or specific roles and still add to navigation | wordpress-access-control home ... | 3.1.2 25039 2011-12-07 3.3.2 |
| More Privacy Options WP3.0 multisite "mu-plugin" to add more privacy options to the options-privacy and ms-blogs pages. Just drop in mu-plugins. | more-privacy-options home ... | 3.2.1.5 10342 2012-05-15 3.3.2 |
| Membership Membership transforms your WordPress website into a fully functional membership site. | membership home ... | 2.0.7 55159 2011-12-15 3.3.2 |
Why not just password protect?
Another very simply method of protecting content is to password protect it.