  A multitude of wireless devices for radio local area networks (RLAN) use
frequency bands that are shared with other radio services or applications.
European market surveillance activities on 5 GHz RLAN indicate a growing number
of non-compliant devices that do not fulfill all radio regulation requirements
and may cause interference. This paper describes a concept and method for
mitigating the use of non-compliant equipment based on a public key
infrastructure. If every RLAN device holds a security certificate, which is
revoked when non-compliance is found, then the connection establishment between
devices can be made dependent on compliance. The aim is that legitimate
equipment rejects connections to non-compliant devices, so that non-compliant
devices will become isolated.
