I. Introduction
Day by day, various issues, i.e., sharing and connecting network resources over WAN, are increasing because of multiple offices at different locations. This article discusses the problems of connecting and sharing resources over WANs. Many companies seek to expand their business in other areas using wide-area networks [1–3]. WAN is everywhere, e.g., person A is accessing the data from a web browser located in different cities or countries with the help of the Internet [4–5].