| dc.description.abstract | After the rapid development of the Internet, the enterprise network that was originally build upon dedicated line(s) has been facing great impacts due to its cost efficiency inadequacy. In recent years, setting up VPNs (Virtual Private Networks) on top of the Internet has become a popular trend. Its related specifications and technologies are constantly being introduced. ISPs (Internet Service Providers) are rolling out all kinds of VPN solutions, and enterprises also want to lower the cost of operating a enterprise-level network by the means of introducing VPN solutions into their systems.
This research project will focus on the discussion and reviewing of the currently available VPN application technologies, further analyze and conclude the five layouts regarding the establishment of VPNs such as 1. Data Integrity & Safety 2. Data Access & Control 3. Data Compatibility & Expansion 4. Data Efficiency & Quality 5. Data maintenance & Management. Then divide into five different kinds of categories according to the size of the current enterprise, and the possible VPN technology used in each category. From the used of the most basic technologies such as tunneling, encrypting, authenticating, certificate management, the application of access control mechanism like RADIUS and LDAP; as well as the application of service quality QoS technology, MPLS, RSVP, CoS, etc. This research project will use a simple evaluation module to evaluate the relationship between the different technology mechanisms used by different kinds of companies with its relative layouts, to understand the impact of application technologies on constructing VPNs.
Finally we will use the example of several ISPs from domestic and aboard, discuss their VPN services; to analyze and conclude application mechanism of their layouts, and bring forward some suggestions on constructing VPNs. | en_US |