As an example for an non-standard authorization method, we provided the script
tdyndns_auth_simplepwd that just checks whether the user is present in the
-system and whether a certain password is given:
+system and whether a certain password is given (supplied via "AuthExternalContext"
+below):
<VirtualHost *:80>
ServerName dyndns.example.com
AuthType Basic
AuthBasicProvider external
AuthExternal tdyndnsauth
+ AuthExternalContext hygCithOrs5
AuthName "tdyndns authorization"
Require valid-user
</Directory>