Access Control for OpenGIS® Web Services

Access Control for an OpenGIS® Web Service based Spatial Data Infrastructure is one of the relevant pre-conditions to provide high quality geographic information. Basically, access to the services has to be protected by an appropriate Access Control System that implements (at least) the following requirements:

These (and more) requirements are supported by the Geospatial eXtensible Access Control Markup Language, short GeoXACML. It defines a geo-specific extension to the eXtensible Access Control Markup Language, short XACML which is a standard from OASIS. More information on GeoXACML can be obtained from the Homepage.

The establishment of Access Control requires Authentication. One interoperable solution to implement Authentication that supports Single-Sign-On is based on on the Security Markup Language Standard by OASIS.