Install libapache2-mod-lookup-identity by entering the following commands in the terminal:
sudo apt update sudo apt install libapache2-mod-lookup-identity
Description:
Apache module to retrieve additional information about the authenticated user
mod_lookup_identity can retrieve additional pieces of information about user authenticated in Apache httpd server and store these values in notes/environment variables to be consumed by web applications. Use of REMOTE_USER_* environment variables is recommended.
Homepage: http://www.adelton.com/apache/mod_lookup_identity/
Version: 1.0.0-1
Section: universe/web