the topic is security through network architecture

Required to do literature survey of one topic, such as latest techniques, history, future trend, and so on, and compare pros and cons of at least three existing solutions. Please discuss at least three pros and three cons for each existing solution. It is an open survey. Students can choose the topic by themselves. Each student is required to finish two-page A4 size report (font: Calibri (Body), font size: 12, single column, single space, figures are not counted as the contents of a two-page A4 page).