00309nam a2200085Ia 4500008004100000245005000041260000900091300009800100650002500198180130s9999    xx            000 0 und d  cHarmening, James T.aVirtual private networks  c2013  aBook title: Computer and information security handbook--Acession number C20545; pages 855-868  aINFORMATION SECURITY