DDOS Program: Denial Of Service Attack. A Denial of Service (Do. S) or. A DDo. S attacker typically uses your computer to attack another one. As of July 2. 01. Do. S attacks has gone up to an all- time high of an average 2.
A DDo. S attack typically involves a cracker using a network of zombie bot computers to sabotage a certain specific website or server. The cracker tells all the bot computers on his botnet to contact the server or website repeatedly andconsistently.
This sudden increase in server traffic results in the site loading very slowly for its legitimate users, or even shut down completely is the requests overwhelm its resources. Some tricky botnets may use uncorrupted bot computers as part of the DDo. S attack. The cracker sends a command that initiates this attack to his zombie army of computers. Each of them then sends a connection request to another innocent computer known as a reflector. This request appears to the reflector as if it originates from a targeted victim of the attack and not from the zombie army. The reflectors bombard the victim system with information, eventually making its performance to suffer or causing it to shut down completely because of the inundation with a myriad of unsolicited responses from multiple computers at once.
In the victim. Some major technology, software, computer security and Internet companies have been. DDo. S attack victims including Microsoft which suffered a DDo. S attack called My. Doom. Others include Amazon, Yahoo, CNN and e. Bay. Once an army of bots commences a DDo.
S attack against a targeted victim, there are a few measures the system administrator could do to prevent a catastrophe. For instance, he could limit the amount of traffic that is allowed on his server.
Though this technique also restricts legitimate connections, it is a step towards preventing more damage. An administrator could also try to determine the origin of an attack and try filtering the traffic. Unfortunately, this is not always an easy thing to do iven that many zombie computers will disguise or spoof their addresses to cover their tracks.
This glossary contains a list of terms, abbreviations, and acronyms frequently used when discussing networks, security, firewalls, and WatchGuard products. DoS (Denial of Service) attack can cause overloading of a router. Which means that the CPU usage goes to 100% and router can become unreachable with timeouts. The equation presented by Kambourakis et al. The Mitnick attack has five general steps: Step 1: Information gathering. Before the attack, Mitnick was able to determine the TCP sequence number generator’s.
Werner Thalmeier Director, Security Solutions EMEA 7. April 2016 Switzerland under Attack.