Jeremy Pry

Force all of the users on your Multisite Network to login at the main site address.

Redirect Network Login

Redirect the the wp-login.php for sub-sites to the main site

prontotools

zkancs

Do some or all of the websites in your multisite network require a custom login logo? Well now you’re in luck!
This plugin allows you to customize the login logo per site, with the option to use the network’s default logo as well.
Once installed, access your theme’s Customize settings to update the logo.
Here is our <a href="https://github.com/prontotools/multisite-login-logos" title="Fork" rel="nofollow ugc">Git repository</a>. Feel free to contribute!

Multisite Login Logos

Easily change the logo on a network site's WP login screen using WordPress's Customize settings.

Redirect Network Login vs Multisite Login Logos