libapache2-mod-webkdc binary package in Ubuntu Focal amd64

 WebAuth is a cookie-based web authentication system built on top of
 Kerberos. It relies on a central authentication server that handles all
 user authentication for a domain and creates user authentication
 credentials for any web server that needs strong authentication.
 .
 This package contains the Apache module for the central authentication
 server for a particular site. Only one such server is needed; all web
 servers that use WebAuth will talk to this server to obtain and verify
 authentication credentials.

Source package