Layered Security Framework for Intrusion Prevention

Internet provides huge information and value to the users but at the same time access to the internet is prone to increasing number of attacks. Due to vulnerabilities in the network system, protecting network from malicious activities is prime concern today. It is important to analyse vulnerabilities and record them so that future attacks can be predicted. In this paper vulnerabilities which exist in the TCP/IP Model and the attacks which exploit these vulnerabilities are described. Existing defense mechanisms for the attacks are also discussed. We propose a security framework based on TCP/IP layered approach for defense against various network attacks. Keywords— Security, TCP/IP Model, Vulnerabilities, Attacks