the time it took for the server to crash under different attack traffic that was measured starting from 3.1 Gbps to 6 Gbps. To solve this problem, the Windows Server 2012 R2 OS was updated with the updates available from Microsoft [18] - [21] but the server continued to crash under the attack. It can be seen from Figure 6 that the server crashed in (as little as) 1.5 minutes when it experienced a 6 Gbps of SYN attack traffic.