NetSHIELD: Countermeasure Tool for Network Layer Attacks

In TCP/IP Reference model, Network layer & Transport layer plays an important role in order to send any Information via network. So focus of attackers is to break all the security aspects of layer 3. The network has protocols like Internet Control Message Protocol (ICMP), Internet Group Management Protocol (IGMP), Internet Protocol (IP), Address Resolution Protocol (ARP), Reverse Address Resolution Protocol(RARP), etc. Each Protocol has its own vulnerability, which is exploited by an attacker. So mainly we are focusing on the attacks like DDoS (Distributed Denial of Service), Ping of Death, Teardrop, Smurf, Fraggle, TCP-SYN Flood attack. Here we are going to study, how actually attack is going to happen? What will be the effect of it? And what kind of Preventive measures needed?