Chapter 12, Problem 20RQ

Explanation of Solution

VPN:

Virtual Private Network (VPN) is a data network connection which uses the public telecommunication infrastructure. However, it retains confidentiality.

• This confidentiality is maintained with the help of “tunneling protocol” and “security procedures”.
• The tunneling protocol is called Point-to-Point Tunneling Protocol (PPTP) and is used for secure connections in an organization with the help of public resources such as Internet.
• With the help of Internet, employers of the bank can use PPTP to make a tunnel, and this type of connection is used to broadcast confidential bank data over the Internet. So, data must be secured...