Install libapache2-mod-authn-webid by entering the following commands in the terminal:
sudo apt update sudo apt install libapache2-mod-authn-webid
Description:
WebID FOAF+SSL authentication module for Apache
This module provides a WebID FOAF+SSL authentication mechanism for Apache. . FOAF+SSL is a secure authentication protocol that enables the building of distributed, open, and secure social networks: the Social Web. The protocol is being developed by the W3C WebID Incubator Group. . Clients are verified using a SPARQL query.
Homepage: http://dig.csail.mit.edu/2009/mod_authn_webid/
Version: 0~20110301-5
Section: universe/httpd