A home security and control system for monitoring and controlling an external environment such as a home environment comprising: an Internet browser connectable to an extranet; an extranet located external to the home environment and accessible via the Internet browser; a communications server located in the extranet and adapted to interconnect on demand with one of a series of connection gateways located in predetermined home environments; and a connection gateway located in the home environment adapted to control and/or monitor the operation of at least one security device in the home environment; wherein upon accessing a predetermined address by the Internet browser on the extranet, the communications server connects to a predetermined one of the connection gateways to control and/or monitor the operation of the security device. The extranet can ideally be implemented as a Virtual Private Network (VPN) across an Internet substrate.