Network security

          You are requested to write review, survey or state-of-art article within the domain of (Network Security). Your article has to give an overview of existing literature in a field, often identifying specific problems or issues and analyzing information from available published work on the topic with a balanced perspective. Review articles can be of four types, broadly speaking opinion, literature reviews, systematic reviews, comparison or fields analyses. Notes: 1. The template of the article can be found in https://www.ieee.org/conferences/publishing/templates.html 2. Your article is 6 pages including not including references. 3. At least, 10 of your references must be from journal articles published in well publishers’ databases; IEEE, Springer, Elsevier, Wiley and Taylor & Francis. (not old references) it should have : 1-Abstract 2- introduction 3- identifying the problem 4- discuss the solutions 5- compare the solution 6- your conclusion