In Chapter I, the introduction to the whole thesis, which is presented as problematic inter alia, objectives, variables which help us to the understanding of it is detailed._x000D_ In Chapter II, we proceed to describe the theoretical framework of the thesis which is useful to the growth and further development. The description of the physical and logical network equipment is performed. Within management, the way indicated as currently manages the network, showing its weaknesses, threats and risks._x000D_ In Chapter III, we proceed to describe the methodology to be developed by the thesis, since her achieve evaluate possible solutions and / or problems which are detailed, selecting samples and collecting data. In addition to the goals set by fixed security methodology._x000D_ This chapter IV, we proceed with the development of the methodology, where security policies were formulated, ana...