DoS....NOT A NEW THING TO MANY OF US

DoS....NOT A NEW THING TO MANY OF US....DENIAL OF SERVICE ATTACK....Denial of Service or (DoS) attacks have matured from mere annoyances to severe high-profile attacks to e-commerce sites. When performing DoS attacks there are alot of approached techniques,
including the famous but old "Ping of Death"...PING OF DEATH IS THE SIMPLEST AND MOST COMMON WAY OF CARRYING A SUCCESFUL DOS ATTACK....SO...I'
LL LET U PEOPLE KNOW SOMETHING NEW....
SYN FLOODS
A newer technique of DoS is SYN floods, basically this is done through a 3 step process, better known as the three way handshake. When a TCP connection is initiated this occurs. Under some normal circumstances, a SYN packet is sent from a specific port on system 1 to a specific port on system 2 that is in the LISTEN state. Then the potential connection on system 2 is in a SYN_RECV state. At this stage system 2 will attempt to send back a SYN/ACK packet to system 1.If all works out, system 1 will send back an ACK packet, and the connection will move to an ESTABLISHED state. Now thats what happens most of the time, but a SYN flood is different it creates a half open connection. Most systems can sustain hundreds of connections on a specific port, but it will only take a few half open connections to exhaust all the resources on the computer.

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