File mod_auth_cas.conf of Package apache2-mod_auth_cas

# mod_auth_cas configuration

<IfModule mod_auth_cas.c>
    CASCookiePath /var/cache/apache2/mod_auth_cas/
    #CASLoginURL https://cas.example.com/cas/login
    #CASValidateURL https://cas.example.com/cas/serviceValidate
</IfModule>

# Enable the module with 'a2enmod auth_cas', set the appropriate URLs above,
# and then protect a "Location" or "Directory" block in your vhost, e.g:
#<Location /secured>
#    Authtype CAS
#    Require valid-user
#</Location>
#
# Instead of 'valid-user', other Require directives, e.g. 'Require user ...',
# 'Require cas-attribute edupersonaffiliation:staff', etc. can be used.
#
# Consult /usr/share/doc/packages/apache2-mod_auth_cas/README for further
# details.