This chapter covers the following topics:
Oh, how much is today hidden by science! Oh, how much it is expected to hide!
|--Friedrich Nietzsche, The Genealogy of Morals, 1887|
Private information is practically the source of every large modern fortune.
|--Oscar Wilde, An Ideal Husband, 1895|
Virtual private networks (VPNs) are a means to establish a private network over any other network. Typically, the “other” network is deemed insecure, so traffic sent over it requires some kind of extra protection. The most common example of this is a