7
Security
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,
private information, etc. Of the various possible solutions, we shall
discuss two in detail: the use of secure elements and the Cloud of
security. Whilst the first solution has been in use for a long time, the
second is a new paradigm which is becoming increasingly widespread.
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 7.1. The Cloud of security
contains numerous virtual machines for security such as authentication
servers, authorization servers, identity management servers but also
firewalls and even very specific firewalls corresponding to a particular
application. We also sometimes find secure element servers which
may contain thousands of SIM cards or HSMs (Hardware Security
Modules).
Software Networks: Virtualization, SDN, 5G and Security, First Edition. Guy Pujolle.
© ISTE Ltd 2015. Published by ISTE Ltd and John Wiley & Sons, Inc.
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