Introduction about me and my project “Denial of service attack”

I am LOVEPREET SINGH AJRA,  pursuing Masters of IT (Computer Networking) from Charles Strut University (Australia). It is my last semester and I did my Bachelors of Technology (IT) from LLRIET (India).

Introduction to cyber security for those who are new to the field.

Network outages, data compromised by hackers, computer viruses and other incidents affect our lives in ways that range from inconvenient to life-threatening. As the number of mobile users, digital applications and data networks increase, so do the opportunities for exploitation.


Cyber security, also referred to as information technology security, focuses on protecting computers, networks, programs and data from unintended or unauthorized access, change or destruction.


Governments, military, corporations, financial institutions, hospitals and other businesses collect, process and store a great deal of confidential information on computers and transmit that data across networks to other computers. With the growing volume and sophistication of cyber attacks, ongoing attention is required to protect sensitive business and personal information, as well as safeguard national security.

Denial of service attack

As we know computer becomes an important part of human’s life. We can see these machines in every small and big fields. However, there are some security issues related to the computer security. Denial of service attack (DOS) is one of them. The main purpose of this type of attack is to disconnect the connection of user from the server. When a user try to connect with that server the attacker flood the requests on the server at the same time. The delivery of so many messages at a time force the server to stop the services to user. This report will discuss how a system or server can be protected from the DOS (Denial of service) attack.

The advancement in the technology becomes easy to carry a computer in your pocket. People can access any type of information from any part of the world easily. Everything is done online and there are a lot of issues to transmit the data. Systems can be hacked by anyone who know these techniques if there is no any special protection is used. Sometime what happen a lot of requests for a particular site can down the server. The following picture shows this situation.

There is a limit of every server to reply at a time to a number of requests and for the mean time other requests has to wait until others are not fulfil their purpose. The attacker use the same strategy to down the server or unavailable the source to the normal user. A lot of organizations are connected with a single or same server where this type of interrupt happen. To transmit the data major medium is internet where the efficiency of the transition is effected by the flood of traffic. Same happens in the DOS attack which slow down the speed of the network and also reduce the space of disk.


Risk issues

  • It can block the users to access a particular web.
  • It can affect the speed and services of CPU.
  • Unwanted E-mail can consume the space of E-mail application.
  • It can down the business sites.
  • It can disconnect the network by data traffic.

Solution to protect the server from the Denial of Service attacks.

To get freedom from the DOS attack or to prevent that type of attack there is a web application firewall know as dotDefender which helps to control or protect the server for the attack. It checks the traffic of you HTTP traffic and it also checks all the packets furthermore, it stops the ports, protocols and address that are harmful for system. This software is easy to install it’s a plug and play software that provides the large protection to the system from the different type of attacks.

The reasons to use it are:

  • Easy to install.
  • Provide best security features against known and unknown attackers and hackers.
  • Can manage multiple servers easily.
  • There is no required of any special hardware.

Research Issues

Research plans depend on what you need to find out, what data you need to collect and what will affect your decision.

Time scale

Limited resources related to topic.

very less data related to solutions.


In conclusion DOS attack is serious problem that down the system or a site for short or long time to prevent this type of attack or nay other attacks make sure your systems are updated on the time. An antivirus is installed in it and the firewall is on. Do not allow or open the harmful site that can break the security of your system.