|
Understanding Denial-of-Service Attacks
What is a denial-of-service (DoS) attack?In a denial-of-service (DoS) attack, an attacker attempts to prevent legitimate users from accessing information or services. By targeting your computer and its network connection, or the computers and network of the sites you are trying to use, an attacker may be able to prevent you from accessing email, web sites, online accounts (banking, etc.), or other services that rely on the affected computer.The most common and obvious type of DoS attack occurs when an attacker "floods" a network with information. When you type a URL for a particular web site into your browser, you are sending a request to that site's computer server to view the page. The server can only process a certain number of requests at once, so if an attacker overloads the server with requests, it can't process your request. This is a "denial of service" because you can't access that site. An attacker can use spam email messages to launch a similar attack on your email account. Whether you have an email account supplied by your employer or one available through a free service such as Yahoo! or Hotmail, you are assigned a specific quota, which limits the amount of data you can have in your account at any given time. By sending many, or large, email messages to the account, an attacker can consume your quota, preventing you from receiving legitimate messages. What is a distributed denial-of-service (DDoS) attack?In a distributed denial-of-service (DDoS) attack, an attacker may use your computer to attack another computer. By taking advantage of security vulnerabilities or weaknesses, an attacker could take control of your computer. He or she could then force your computer to send huge amounts of data to a web site or send spam to particular email addresses. The attack is "distributed" because the attacker is using multiple computers, including yours, to launch the denial-of-service attack.How do you avoid being part of the problem?Unfortunately, there are no effective ways to prevent being the victim of a DoS or DDoS attack, but there are steps you can take to reduce the likelihood that an attacker will use your computer to attack other computers:
How do you know if an attack is happening?Not all disruptions to service are the result of a denial-of-service attack. There may be technical problems with a particular network, or system administrators may be performing maintenance. However, the following symptoms could indicate a DoS or DDoS attack:
What do you do if you think you are experiencing an attack?Even if you do correctly identify a DoS or DDoS attack, it is unlikely that you will be able to determine the actual target or source of the attack. Contact the appropriate technical professionals for assistance.
Comments
|
Recent Posts
Please Review ExaCubes.com
Comment My Post & Get Free Domain Name FREE Domain Name Registration From MyiStop.Net BMW to become Linux powered car? Nokia to acquire email & IM Provider OZ Fisker Karma hybrid sports car to generate noise ! Dell snaps Penryn chips into Precision M6300 Reaction Engines' A2 supersonic - Target Sky Sony Ericsson waterproof Cyber-shot phone Samsung SyncMaster 2493HM / 2693HM LCD Displays Syndication Tools    |
|
You are not logged in. FREE Sign Up or Log In
Free Sign Up - Start Making Money on Flixya »
©2009 Flixya Entertainment, LLC. All rights reserved.
http://www.flixya.com/blog/coolramiz
.....................................................................
MY other blog and website just take a look
http://mobhunter.blogspot.com
http://games4urmachine.blogspot.com
http://mobhunter.forumer.com