The Server : Denial Of Service

iPremier, a Seattle based company, was founded in 1996 by two students from Swathmore College. iPremier had become one of a few success web-based commerce, selling luxury, rare, and vintage goods over the Internet. Most of iPremier’s goods sell between fifty and a few hundred dollars, and the customer buys the products online with his or her credit card. iPremier’s competitive advantage is their flexible return policies which allows the customer to thoroughly check out the product and make a decision to keep the product or return it. The majority of iPremier customers are high end, and credit limits are not a problem.

This type of attack is any event that diminishes or eliminates a network’s capacity to perform its expected function. These attacks are launched against server resources

Denial of service – Denial of service or DOS is an attempt to make a machine or network unavailable to its users. The services that were available to the user wouldn’t be available anymore. Although the result of a DOS attack does not lead to data theft. However a great deal of time and money can cost the company. An example of a service being stopped is email, or can be a loss of network connectivity. There could be no access to shared storage and no one would be able to access the internet while the DOS attack.

One of the non-technical control that I would endorse is user awareness & training. User awareness and initial/refresher training should be an obligatory yearly requirement for all staff members; since 86% of the incident come from human error, alertness should be a prime control for mitigation actions. Employees must be made aware of emerging threats and the policy & practices to eradicate

This presentation discusses an incident known as a denial of service (DoS) as well as an intrusion of the clinic’s network systems. A denial of service (DoS) attack is designed to shut down services which a business needs to operate. This incident caused widespread slowness and outages to internet services and affected the clinic’s capability to properly treat its patients. In this presentation, the incident is examined. The processes to detect, analyze, contain, eradicate and recover from the incident are the focus of the presentation. Once the incident investigation was complete, special consideration was made as to what was learned and how clinic staff can help protect the clinic’s ability to properly serve its patients.

Availability keeps data and resources available for authorized use, especially during emergencies or disasters. This policy will address common challenges to availability. Denial of Service this is due to intentional attacks or because of undiscovered flaws in implementation. The policy will address loss of information system capabilities because of natural disasters. The policy will also focus on equipment failures during normal use.

Denial-of-Service (DDoS) attack is the one in which the host’s network elements are flooded with high volume of fabricated attacking packets that originate from a large number of machines [12]. A successful attack allows the attacker to gain access to the host’s machine, allowing stealing of sensitive internal data and possibly cause disruption and denial of service (DoS) in some cases.

This presentation discusses an incident known as a denial of service (DoS) as well as an intrusion of the clinic’s network systems. A denial of service (DoS) attack is designed to shut down services which a business needs to operate. This incident caused widespread slowness and outages to internet services and affected the clinic’s capability to properly treat its patients. In this presentation, the incident is examined. The processes to detect, analyze, contain, eradicate and recover from the

A Denial of Service (DoS) attack on the corporate IT system at IVK Corporation. (Adapted from the book The Adventures of an IT Leader, 2009, Harvard Business School Publishing). After reading the case description, answer the questions that follow.

Denial of Service (DoS) attack is a very common cyber menace that renders websites and other online means inaccessible to intended users. There are various types of DoS threats and nearly all directly target the core server structure. Others abuse weaknesses in application and communication proprieties. DoS is also used as a cover-up for other wicked actions, and to take down security applications like web firewalls. A prosperous DoS attack is very obvious and impacts the entire online user base.

The threat of Denial of Service attacks, as well as any attacks on Advanced Research’s public facing infrastructure, is a major security issue for multiple reasons. Firstly, Kenig (2013) reported “The average cost of one minute of downtime due to a DDoS attack is $22,000. With an average downtime of 54 minutes per DDoS attack, this amounts to a heavy toll.” That amounts to $1,188,000 for an attack that lasts just under an hour. Can Advanced Research afford even that small amount of downtime? How much revenue is Advanced Research losing from sales lost during that time? How many customers are losing faith in the company because of these attacks? How much employee productivity is lost? For Advanced Research to continue to grow

Denial-of-service is an attack aimed to refuse access for legitimate users and disrupt service availability according to www.msdn.microsoft.com. This type of security threat according to www.tech.co.uk is rapidly increasing on the Internet due to open doors on Websites. By using the Internet, companies increase the risk of denial of service attack. Denial of service can also be caused by too many connected to a server at the same making run slow or unavailable to others. People who deliberately abuse a network server are often difficult to track down.

DISTRIBUTED DENIAL OF SERVICE (DDoS) Prachi Shah School of Informatics and Computing Indiana University Bloomington Email: pracshah@indiana.edu Abstract--- Distributed Denial of Service attacks are executed by an attacker that uses numerous zombie machines to launch an attack against the victim system. The purpose is to exhaust the connection bandwidth thereby, making a network resource or a service temporarily or indefinitely unavailable to its intended users. Keywords DoS, DDoS, bandwidth, networks, zombie, botnet 1. INTRODUCTION 1.1 Computer Security and Privacy One of the most challenging and important issues faced in the computer networks domain since a very long time now are network security and privacy issues.

In our network technology Server Hardening is one of the most important things to be handled on our servers, becomes more understandable when you realize all the risks involved. The default configuration of most operating systems are not designed with security as the primary focus. Now a days default setups are focus more on communications, usability and functionality. To protect our servers we must establish solid and sophisticated server hardening policies for all servers in our organization. Developing a server hardening checklist would likely be a great first step in increasing our server and network security. Make sure that our checklist includes minimum security practices that we expect of our staff.

Distributed denial of service is hard to block. Due to much traffic, system could not tolerate the unacceptable requests from different machines. A single user is attacked from the number of attackers. The millions of requests force the computer to shut down. The main purpose of denial of service is to disturb business of specific organization. The normal work is effected such as make server unavailable to its regular users. A single blockage of an IP address could not stop the attack.