It is not a secret that Internet of Things (IoT) devices often come with not so realistic processing power (i.e. processing power and storage requirements) that would provide a basis for strong security and encryption algorithms. This work proposes an approach to adding a simple interface as a security gateway architecture for IoT devices. The security interface provides mapping for the IoT device remote services as long as support for stronger cryptographic algorithms. The solution improves the security of the data that IoT devices send to remote services by performing compatible cryptographic algorithms on the data before it sends to remote services. The result of this work is the development of a security interface that provides support for any cryptographic algorithm, uses Internet Protocol (IP) mapping to prevent access to the devices behind the interface from non-authorized IP addresses. As such it provides robust protection against attacks and data manipulation. The work is tested for memory usage and the strength of the security it provides.