Enhancing Network Security by implementing preventive mechanism using GNS3

Abstract

Due to rapid need of computer's in business and other organizations many networks has been established. In today scenario attacks on computer networks has increased to a great extend. Networks are very much needed but they are very prone to attacks because of security breaches & vulnerabilities in traditional establishments. There are many types of attacks which can be penetrated in our networks or edge devices; one of the most prone attack is the ICMP flood attack leading to denial of service. In this paper we would analyze different types of DOS attacks and available mechanism to protect our network. Further we describe the need of establishment of secure computer networks by using proper policies, rules on edge network devices. We also have tested them in Lab using GNS3 simulator. By implementing enhanced policies internal network's can be secured from attacks like ICMP flood.

Impacts Evaluation of DoS Attacks Over IPv6 Neighbor Discovery Protocol

“…A number of organizations have encountered network attacks initiated by malicious insiders; a trusted person from the organization is referred to as an insider. In case those malicious insiders are the ones who are initiating attacks, it will be troublesome to find them out because of the fact that insiders generally have knowledge about the security mechanisms of the organization's network (Kuldeep and Tyagi, 2014). A link-local DoS attack cannot be prevented with the utilization of encryption and integrity checks, which are commonly used to encounter attacks that take place outside the network.…”