How To Restrict Editing by Non-Logged-In Users in MediaWiki

If you administer a MediaWiki Wiki, you’ve probably come across wiki spam. There is a quite simple way of fixing this. Just edit the file LocalSettings.php in the root directory and add the following line at the bottom (or anywhere else):

$wgGroupPermissions['*']['edit'] = false;

This will remove the edit-permissions from users who have not yet logged in. If a guest tries to edit, they will be prompted to log in. Since you would no longer be able to edit using only your IP address as a signature, adding the following line might be desired too:

$wgShowIPinHeader = false;

Doing so removes the IP address from the header for non-logged-in users (logged-in users wouldn’t see it anyway). Happy wikiing.

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