A Survey on Network Intrusion Detection

Abstract

Network security is any activity designed to protect the usability and integrity of your network and data. It includes both hardware and software technologies. Effective network security manages access to the network. It targets a variety of threats and stops them from entering or spreading on your network. Network security combines multiple layers of defenses at the edge and in the network. Each network security layer implements policies and controls. Authorized users gain access to network resources, but malicious actors is blocked from carrying out exploits and threats. Two types of network includes wired and wireless network. The common vulnerability that exists in both wired and wireless networks is an “unauthorized access” to a network. An attacker can connect his device to a network though unsecure hub/switch port. In this regard, wireless network are considered less secure than wired network, because wireless network can be easily accessed without any physical connection. Network security is a big topic and is growing into a high profile Information Technology (IT) specialty area. Security-related websites are tremendously popular with savvy Internet users. The popularity of security-related certifications has expanded. Esoteric security measures like biometric identification and authentication have become commonplace in corporate America. Many organizations still implement security measures in an almost haphazard way, with no well-thought out plan for making all the parts fit together. Computer security involves many aspects, from protection of the physical equipment to protection of electronic bits and bytes that make up the information that resides on the network.