Software Networks, 2nd Edition

15Security

Security is of prime importance for the networks of today and will become even more crucial in tomorrow’s world. With the Internet, it is necessary to constantly be inventing new procedures to ensure the non-disclosure of numerous elements, such as the location, the names of the parties being authenticated, the semantics of the messages and private information. Of the various possible solutions, we will discuss three in detail: the use of a Cloud of security, the use of secure elements and the emergence of the blockchain. The first solution is a new paradigm which is becoming increasingly widespread. The second solution has been used for a long time now but is renewed with the eSIM. The third solution is growing fast and offers certification and traceability.

Security in the world of networking is a paradigm which does not have a simple solution, besides making improvements to the existing algorithms, of which there are already a very great number, with a view to dealing with new attacks. Yet this chapter discusses a new solution in the world of security: the Cloud of security – i.e. a Cloud whose purpose is to secure the data and networks in the world of operators, companies and the general public. An initial diagram of a Cloud of security is shown in Figure 15.1. The Cloud of security contains numerous virtual machines for security such as authentication servers, authorization servers, identity management servers as well as firewalls and even very specific firewalls ...