Understanding DoS attacks and the best free DoS attacking tools

Free DoS Attacking Tools

To cause service issues, a Denial of Service (DoS) attack is planned. Even though the attacker doesn’t request a bribe to stop the attack, these attacks can cost companies a large amount of harm and lose money. There is a range of different free DDoS methods, creating it inexpensive and simple for this attack strategy to be used by even uncultured attackers. Enroll yourself in cybersecurity certifications such as CISSP certification to learn combat such attacks.

Ways to start up a Denial-of-Service assault?

You can carry out DoS attacks in various ways. Examples of simple methods for attacks involve:

Attacks at Protocol level: 

Devices have allocated a fixed amount of Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) port numbers and cannot control a unique address if no port is possible. Protocol-level attacks attempt to consume all available connections to the device, making it unable to receive new links.

Attacks volumetric: 

Network Interface Cards (NICs) and Network connections have charge controllers on bandwidth. Volumetric attacks are intended to overwhelm these devices by giving more information than they can control. These attacks may be made up of a big number of small packets or a lower number of very big ones.

Attacks on the application-layer: 

Apps that communicate over the system must be responsible for processing the demands they collect. In many situations, the software limits are much lower than the infrastructure that it operates. By giving several valid demands to apps, an attacker can consume all of its required resources and make them unavailable to its intended users.

List of Top 10 Free DoS attacking tools

The selection of free Denial of Service (DoS) attack tools available and are mentioned see below penetration testers who need to freely conduct their attacks but do not want to write their new tools.

1. DDoS-The DDoS Simulator Layer 7

Another powerful Denial of Service (DoS) attacking method is DDoSIM. This is used to carry out DDoS attacks by duplicating multiple living dead hosts, as the name implies. Full TCP connections to the target device are provided by all living dead hosts.

Written in C++, this tool works on Unix systems. 

It is DDoSIM’s best components,

  • Flood of TCP connections on a random port 
  • DDoS HTTP with legitimate requests 
  • TCP-attacks based on connections 
  • DDoS application-layer assaults 
  • Simulates an attack by multiple living dead 
  • HTTP DDoS (similar to a DC++ attack) with invalid requests 
  • Random IP addresses

2. Switchblade for OWASP (formerly DoS HTTP POST).

Another good method for Denial of Service (DoS) attacks is the OWASP Switchblade. They could use this method to analyze whether your web browser can protect against Denial of Service (DoS) attacks not. For not only defensive, but it can also be used during a Red Team practice to conduct DoS attacks against a website.

3. R-U-Dead, and yet

R-U-Dead-Yet is an attack method for HTTP POST Denial of Service (DoS). This is also called RUDY, for small. It carries out a DoS attack through the POST method with a long-form field submit. An interactive console list comes with this method. It identifies forms on a link Provided and allows users to pick which forms and fields for a Denial of Service (DoS) attack based on POST can be used.

4. GoldenEye HTTP Denial of Services Too

Another easy but efficient DoS attacking method is GoldenEye. It was developed to test DoS attacks in Python.

5. Low Orbit Ion Cannon (LOIC)

Low Orbit Ion Cannon LOIC are some of the greatest free network Denial of Service (DoS) attack methods available. Not only did the popular hacker Unknown use the tool, but also it demanded internet users to enter their IRC DDoS attacks.

A single client may use LOIC to execute a DoS attack on small servers. Also for a beginner, this method is very easy to use. By submitting UDP, TCP or HTTP demands to the perpetrator’s server, this method executes a DoS attack. You just want to know the server’s Link or IP address and the method would do the rest.

6. Pyloris

It is said that PyLoris is a testing method for servers. This can be used in a system to execute Denial of Service (DoS) attacks. To execute a DoS attack on a computer, this method will use SOCKS proxy and SSL connections. It is capable of targeting different protocols, as well as SMTP, HTTP, IMAP, FTP, and GSW Telnet Server.

A safe and effective Interface comes with the newest version of the tool. This method, unlike the more conventional Denial of Service (DoS) attacking software, hits the information provider.


Another good method for executing DDoS attacks is DAVOSET. Along with all other characteristics, the new version of the tool has introduced support for biscuits. DARVOSET can be installed from Packet Storm Protection for free.

8. HTTP Unbearable Load King (HULK).

HULK is another good Denial of Service (DoS) attacking method that creates a new request for a web page for everyone and every query, making it harder for the server to identify trends within the attack. It is just one of how inside its attacks, HULK removes patterns.

It also has a collection of identified user agents with demands to be used automatically. It also currently uses a referrer forged document and can bypass center engines; therefore, it hits the resources available on the server directly.

9. Tor’s Hammer

Tor’s Hammer is a good Denial of Service test tool python – Based. Continues to carry out sluggish attacks utilizing Hypertext Transfer Protocol, POST applications.

This method has an additional benefit: when executing the attack, this can be run via a Tor browser to be anonymous. It is an efficient tool that, in a few seconds, can disable Apache or Internet Information Services servers.

10. XOIC

Another good Denial of Service attacking method is XOIC. When the user can include an Email address, and aim port, and a protocol to use in the attack, it performs a Denial of Service attack against every server. XOIC developers say that, in many respects, XOIC is more strong than Low Orbit Ion Cannon (LOIC). It comes with a simple interface, much like Low Orbit Ion Cannon (LOIC), so a starting can simply be using this tool to carry out attacks.

The method consists of 3 attacking modes in particular. The first one is very simple, known as test mode. The second is the normal mode for Denial of Service attacks. The third Denial of Service attack mode comes with a TCP/HTTP/UDP/ICMP message. 


Denial-of-service attacks can force the networks of an enterprise offline and waste precious resources on unwanted traffic. However, if the attacker does not request a ransom to pause their attacks, this incurs considerable costs for the aim.

The various types of additional features make DoS and DDoS attacks inexpensive and simple for cybercriminals, so any company should have systems in place to defend against them. This is particularly true as the development of the Internet of Things and cloud computing make it easier for attackers to conduct entrepreneurship attacks.

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