https://extensionscdn.joomla.org/extension/access-a-security/site-access/jlex-block/?com_jed_review_5356_limitstart=10
JLex Block, by JLexArt - Joomla Extension Directory
The Joomla extension is used to protect one or more pages with a password or restrict views based on factors such as IP address, Country or user.
joomla extensionblockdirectory