The main objective of the report is to review various kinds of network security threats, their impact over the network, action and mitigation techniques. Once the review is done, a small organization is considered to enhance the network security against the current network setup. Possible infrastructure requirements, equipment requirements, protocols and deployment process is discussed in details over the current research. A typical network topology is created and the network security enhancement requirements are reviewed in details and given in various sections of the report. Analysis the network security issues and different types of security threats plays an important role in accessing the network deployment requirements for any organization