Abstract: There is disclosed a method and system for enabling authorised-server initiated Internet communication between a client device and a server device by way of an authorisation portal. When the server wishes to initial Internet communication with a particular client, the server sends an Internet message to the authorisation portal. The authorisation portal then relays the message to the client device by way of a communications protocol other than the Internet, for example SMS. The client, upon receipt of the message, then establishes an Internet connection to the server. In this way, a server can initiate Internet communication with a client despite the presence of NAT or firewalls or the like that would otherwise prevent server initiated communication.

Abstract: There are disclosed methods, systems and devices whereby SSL or TLS communications between an end-user such as a browsing agent and a small embedded device such as a microcontroller without substantial memory or processing power are made possible. One approach is to provide an interfacing computing device between the end-user and the embedded device comprising an SSL/TLS proxy server/router which translates between a relatively heavyweight encryption protocol used by the end-user and a relatively lightweight encryption protocol used by the embedded device. An alternative approach utilises an SSL/TLS assistant computing device that performs computationally expensive encryption/decryption calculations on behalf of the embedded device.