Contemporary Public Opinion : Issues and the News

This book discusses the public opinion process with a focus on the role that the news media play in shaping public opinion. Although heavily influenced by the agenda-setting perspective -- the view that the news media define the important issues of the day and determine how these issues are presented -- the authors neither support nor refute this claim. They present instead a variety of contemporary scholarship integrated into a coherent picture of public opinion for a general audience.

What is IPSec? What''s a VPN? Why do the need each other? Virtual Private Network (VPN) has become one of the most recognized terms in our industry, yet there continuously seems to be different impressions of what VPNs really are and can become.
A Technical Guide to IPSec Virtual Private Networks provides a single point of information that represents hundreds or resources and years of experience with IPSec VPN solutions. It cuts through the complexity surrounding IPSec and the idiosyncrasies of design, implementation, operations, and security.
Starting with a primer on the IP protocol suite, the book travels layer by layer through the protocols and the technologies that make VPNs possible. It includes security theory, cryptography, RAS, authentication, IKE, IPSec, encapsulation, keys, and policies.
After explaining the technologies and their interrelationships, the book provides sections on implementation and product evaluation. A Technical Guide to IPSec Virtual Private Networks arms information security, network, and system engineers and administrators with the knowledge and the methodologies to design and deploy VPNs in the real world for real companies.