Denial Of Service Attack
Submitted by Srikanth on Friday, 7 November 200819 Comments

Its Real,On February 6th, 2000, Yahoo portal was shut down for 3 hours. Then retailer Buy.com Inc. (BUYX) was hit the next day, hours after going public. By that evening, eBay (EBAY), Amazon.com (AMZN), and CNN (TWX) had gone dark. And in the morning, the mayhem continued with online broker E*Trade (EGRP) and others having traffic to their sites virtually choked off.
What is a Denial Of Service Attack?
- A denial of service attack (DOS) is an attack through which a person can render a system unusable or significantly slow down the system for legitimate users by overloading the resources, so that no one can access it.
- If an attacker is unable to gain access to a machine, the attacker most probably will just crash the machine to accomplish a denial of service attack.
Types of denial of service attacks
There are several general categories of DoS attacks.Popularly, the attacks are divided into three classes:
- bandwidth attacks,
- protocol attacks, and
- logic attacks
What is Distributed Denial of Service Attack?
- An attacker launches the attack using several machines. In this case, an attacker breaks into several machines, or coordinates with several zombies to launch an attack against a target or network at the same time.
- This makes it difficult to detect because attacks originate from several IP addresses.
- If a single IP address is attacking a company, it can block that address at its firewall. If it is 30000 this is extremely difficult.
Popularity: 8% [?]
By using/following this site you agree to our Legal Disclaimer
Yeah, recently DDOS attack is getting too famous. And they are using a technique called REFLECTIVE AMPLIFICATION. Do you know anything bout this technique?
@ blaster
Recursive amplification
This type of attack uses IP address spoofing, a type of impersonation technique, where
the attacker transmits packets with a forged source IP address rather than its own. The attack also exploits DNS servers that allow open recursion. Recursion is a method of processing a DNS query in which a name server pursues the query for a client at (typically) the authoritative name server for the name. When recursion is performed for any client as opposed to a trusted set of clients, a name server is said to be an open recursive server. Finally, the attack uses amplification, where the attacker sends a small request with the expectation of invoking a much larger response.
Hey Srikanth, can you let we people, be educated, about how to make an army of zombie computers so as to successfully implement a ddos attack???
is there any software available for dos attack
if yes send me link
there are tools available, but read the legislation about Cyber crime of the country in which u perform DDos or DoS attack.
u could be behind the jail for 10 year for DoS attack as per guideline of U.S.A Cyber crime rules.
so think before doing anything like shit!!!!!!!!!!!!
it’s too old bro
HI
plesa send me link
thanks
Didn’t websites block this feature a long time ago? I don’t think it is possible these days… Is it?
@ Pyrobyte
DOS attacks are still possible today.
Hm. I thought I read somewhere that they can no longer be executed. Well, thanks.
its good……..
but more good articles at
Hi,
Can anyone teach me hacking from basics..
if yes send me mail..
sunnyzende@hotmail.com
pls..
Srikanth you told me that one can forge his IP……….
How can one do that?
hii guyss
please tell me that about DDos attacks and how it works..??
how can i use it in game counter strike , i want to crush bloody fuckers servers.
please temme fast
hiiiiii dude o need a help from u
i know the ip of the victim
i tried the fewq tips to hack the hard sik but i cant
how to hack the hard disk of the victims
just say the latest tips nowwwwwwwwwww
hi shri..tell m how do d terrorists use d various technological aspects…..xplain vit an example on 26/11 mumbai attacks………….thnx geeky…
always learn each and every thing for a good use soooooooooooo it well give you the power of learning okay dude i want to know how the an attacker can use 30000 ip as u mentioned above???????????? plz explain it thank alot
my other question is that how to by pass the firewall means if i got the ip and i want to access that user..
thanks in advance ..thankkkkkkkks
@ amjad
Hacker first compromises an entire network of computers which is vulnerable. There he installs the DOS tools and initiates the attack. In this way he can attack from several computers and hence several IP addresses at a time.
Leave your response!
EMAIL SECURITY »
How to Protect an Email Account from SPAM
Most of us get SPAM every day. Some of us get more and some little. Even a newly created email account will begin to receive spam just after a few days of it’s creation. Many times we …
NETWORK HACKS »
How to Find the IP Address of a Remote Computer
Most of you may be curious to know how to find the IP address of your friend’s computer or to find the IP address of the person with whom you are chatting in Yahoo messenger or Gtalk. …
PC SECURITY »
10 Tips for a Total Online Security
With the sudden rise in the Internet usage across the globe over the past few years, there has also been a rise in the amount of online scams and frauds. Today most of the Internet users are unaware …
VIRUS CREATION »
A Virus Program to Disable USB Ports
In this post I will show how to create a simple virus that disables/blocks the USB ports on the computer (PC). As usual I use my favorite C programming language to create this virus. Anyone with …
XP HACKS »
How to Make Invisible Password Protected Folder
Do you want to password protect your folder? Do you want to make it invisible so that it remains unnoticed by the normal users? Well here is a way to do that. In this post I …
Categories
Blogroll
Recent Comments
Most Commented
Most Popular
Log In | Entries (RSS) | Comments (RSS) | Sitemap | Arthemia Premium theme by Michael Jubel