How does a virtual private network (VPN) enhance online privacy and security? What are the key features of a reliable VPN service?

Network security is a long-standing issue, requiring a careful balance between security and usability. With this in mind, look at the differences between IPv4 and IPv6 and comment on the new security features in IPv6, focusing specifically on ease of use and how effective you think they will be in maintaining the three tenets of Information Security: Confidentiality, Integrity, and Availability.

Describe the process of "public key revocation" and its significance in maintaining a secure communication environment.

Hi, I need to answer this question. The name of the book is "Network Security, Firewalls, and VPNs 2nd Edition". Thank you.   Question:  What are SSL and TSL? Are there differences? Please explain.