Adam Harley (Kawauso)

A quick adaptation of the theme restriction code for plugins. Can only restrict on a site-wide basis, though it will only affect those sites on which it’s activated. Does not restrict super admins. Plugins must be active on the main site to be controlled by this plugin (this is an issue with WordPress’ plugin structure).
See also: <a href="https://wordpress.org/extend/plugins/restrict-multisite-widgets/" rel="ugc">Restrict Multisite Widgets</a>

Restrict Multisite Plugins

Allows network admins to restrict which plugins are available on sites, similar to themes.

10up

Jeffrey Paul

Oomph, Inc.

Taylor Lovett

Jake Goldman

Siddharth Thevaril

Limit access your site to visitors who are logged in or accessing the site from a set of specified IP addresses. Send restricted visitors to the log in page, redirect them, or display a message or page. A great solution for Extranets, publicly hosted Intranets, or parallel development / staging sites.
Adds a number of new configuration options to the Reading settings panel as well as the Network Settings panel in multisite. From these panels you can:
<ul>
<li>Enable or disable site restriction</li>
<li>Change the restriction behavior: send to login, redirect, display a message, display a page</li>
<li>Add IP addresses to an unrestricted list, including ranges</li>
<li>Quickly add your current IP to the unrestricted list</li>
<li>Customize the redirect location, including an option to send them to the same requested path and set the HTTP status code for SEO friendliness</li>
<li>Define a simple message to show restricted visitors, or select a page to show them – great for “coming soon” teasers!</li>
</ul>

Restricted Site Access

This plugin serves what it says. I was trying to solve an issue to restrict my site to specific IP addresses. This plugin solves it. Kudos team. 

Super Helpful Tool

Thanks for this. Works 100%, super helpful. 

Nice work

I have activated the plugin as a replacement for a maintenance plugin on a WordPress instance that I use as an extranet. It does exactly what I was looking for. The settings are absolutely sufficient and completely fulfill their purpose.
Great !!!

Great Plugin for Intranet/Extranet

Limit access to visitors who are logged in or allowed by IP addresses. Includes many options for handling blocked visitors.

Restrict Multisite Plugins vs Restricted Site Access