system security

One way to protect any communication on the Internet is to use a VPN.A VPN can be useful for individuals and companies. One of the mostpopular VPN technologies is OpenVPN (see www.openvpn.net)In about a page, explain in your own words what a VPN is, what it isused for and how it works.Your explanation should include:• (5 marks) In general terms what a VPN is,• (4 marks) examples of where a VPN may be useful,• (7 marks) the technologies used in SSL/TLS VPNs such as Open-VPN, and• (4 marks) how the technologies are used to ensure a secure connectionbetween two networks or a remote machine and a network.Hint: One way to answer this question is to describe the steps thesoftware goes through to establish and maintain a connection.Notes:a). We are not discussing here web browser SSL connections (thoughthe technology is the same) this is a discussion of a VPN with all that implies.b). This is an extremely technical topic and I do not expect you tocover all aspects of it. But you should explain all terms used inyour answer (not covered in the study book), for example, VPN,SSL/TLS, certificates, HMAC, key authentication, session keys, …c). You do not have to implement an OpenVPN connection — thoughit may be helpful in understanding the underlying technologies.d). List all resources used in answering the question.