Here we are demonstrating TCP SYN Flood DOS attack using a tool called aSYNcrone . What if we send several SYN messages to a server from randomly generated IP addresses and we don't respond to the SYN-ACK signal coming from the server?The server will wait for replies leaving its ports half-open from hosts that never really existed! If that happens, the server won't be able to handle the traffic properly, and this will increase CPU power and memory consumption. This will lead to a server crash.That is how the SYN Flood attack works.












