src/include/ssl.properties.in (12 lines of code) (raw):
#
# The URI that should be used to authenticate users with SSL/TLS client
# authentication. This must be a URI that points to THIS instance of Guacamole,
# but behind SSL termination that requires SSL/TLS client authentication.
#
ssl-auth-uri: https://*.auth.guac.example.net
#
# The URI of this instance without SSL/TLS client authentication required. This
# must be a URI that points to THIS instance of Guacamole, but behind SSL
# termination that DOES NOT require or request SSL/TLS client authentication.
#
ssl-auth-primary-uri: https://guac.example.net