Author Topic: DDOS Attack  (Read 412 times)

pradeep

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DDOS Attack
« on: July 07, 2014, 05:02:24 PM »
Hello

A DDoS attack is a brute force or subversive attack against a server or computer. The goal of a DDoS attack is to hamper or stop communication between a website, or server and its users. A DDoS has five major ways to accomplish this, Consumption of computational resources, Disruption of configuration information, Disruption of state information, Disruption of physical network components, Obstructing the communication media. Each of these tactics targets a specific part of a network, and exploits its weaknesses. In order to defend against a DDoS attack one has to know what your vulnerabilities are. Once those are defined, then coming up with a counter strike will be much easier.

Defending against attacks like this require more than one line of defense. If only one line of defense is used then the DDoS attack will do as Germany did to France’s Maginot Line, and go around it. Plugging holes in security and over lapping security measures will keep hackers out of a system and keep your server running smoothly. DDoS attacks can also be used to cover up other actions, such as information hijacking, and malware insertion. DDoS attacks can cause critical data, traffic and hardware loss. Shore up the defenses and draw the line, otherwise hackers will storm the gates.

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Pradeep

rahesh.datasoft

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Re: DDOS Attack
« Reply #1 on: July 11, 2014, 11:06:05 AM »
hai


DDOS is a type of DOS attack where multiple compromised systems -- which are usually infected with a Trojan -- are used to target a single system causing a Denial of Service (DoS) attack. Victims of a DDoS attack consist of both the end targeted system and all systems maliciously used and controlled by the hacker in the distributed attack.
According to this report on eSecurityPlanet, in a DDoS attack, the incoming traffic flooding the victim originates from many different sources – potentially hundreds of thousands or more. This effectively makes it impossible to stop the attack simply by blocking a single IP address; plus, it is very difficult to distinguish legitimate user traffic from attack traffic when spread across so many points of origin.

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nidhinpereira

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Re: DDOS Attack
« Reply #2 on: December 04, 2014, 08:42:15 AM »
hello,
A Distributed Denial of Service (DDoS) attack is an attempt to make an online service unavailable by overwhelming it with traffic from multiple sources. They target a wide variety of important resources, from banks to news websites, and present a major challenge to making sure people can publish and access important information.
daily DDoS Attacks are observed world-wide by Arbor Networks

Building Capacity

Attackers build networks of infected computers, known as 'botnets', by spreading malicious software through emails, websites and social media. Once infected, these machines can be controlled remotely, without their owners' knowledge, and used like an army to launch an attack against any target. Some botnets are millions of machines strong.
Launching Attacks

Botnets can generate huge floods of traffic to overwhelm a target. These floods can be generated in multiple ways, such as sending more connection requests than a server can handle, or having computers send the victim huge amounts of random data to use up the target’s bandwidth. Some attacks are so big they can max out a country's international cable capacity.
Selling Silence

Specialized online marketplaces exist to buy and sell botnets or individual DDoS attacks. Using these underground markets, anyone can pay a nominal fee to silence websites they disagree with or disrupt an organization’s online operations. A week-long DDoS attack, capable of taking a small organization offline can cost as little as $150.

shajahan

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Re: DDOS Attack
« Reply #3 on: June 04, 2015, 10:40:18 AM »
DDOS is a type of DOS attack where multiple compromised systems -- which are usually infected with a Trojan -- are used to target a single system causing a Denial of Service (DoS) attack. Victims of a DDoS attack consist of both the end targeted system and all systems maliciously used and controlled by the hacker in the distributed attack.
According to this report on eSecurityPlanet, in a DDoS attack, the incoming traffic flooding the victim originates from many different sources – potentially hundreds of thousands or more. This effectively makes it impossible to stop the attack simply by blocking a single IP address; plus, it is very difficult to distinguish legitimate user traffic from attack traffic when spread across so many points of origin.