As you may know, recently some of US government websites were attacked and out of service for 2 or 3 days. The attack was DDoS. DDoS stands for Distributed Denial of Service Attack. Attacks started on July 4th, Independence Day.
DDoS is a common attack, but the unexpected thing was crackers were able to shutdown some government websites not just for couple of hours but two or three days. The reason was amount of traffic came to the servers and its duration. However, this shouldn’t be excuse for IT guys in Transportation Deparment or Treasury Department because White House and Pentegon’s websites didn’t suffer this attack as they did. This means that they could get rid of this attack if they took precations. First, let me explain DoS:
What is DDoS?
In a distributed denial-of-service attack, the victim is attacked with messages from multiple hosts. To be able to do DDoS attack, attackers need to get control of thousands of computer. Since they cannot afford to buy 10000 computers (!), they choose to send Trojans to other PCs and get control them.
Zombie:It is a program actually carry out the attack on the victim
Handler: It is a program tell the zombie programs when to carry out the attack.
After that, attackers will initiate DDoS attack by sending huge amount of traffic to his victim by using his zombies and handlers.
I will explain how to protect your network from DDoS in the next article.