What is Dos attack :- A DoS (Denial of Service) attack is a type of cyber attack where the attacker floods a server or website with traffic, overwhelming its capacity and causing it to become unavailable to legitimate users. The attacker achieves this by sending large amounts of traffic or data from multiple sources, or by exploiting vulnerabilities in the system to consume resources and crash the target. The purpose of a DoS attack is to disrupt the normal operation of the target, making it impossible for users to access its services or information.
What is DDos attack :- A DDoS attack is a type of cyber attack where a large number of computers flood a targeted server or website with traffic or requests, causing it to become overwhelmed and unable to respond to legitimate users. This is done through techniques like UDP flood, SYN flood, amplification attacks, and botnets. The goal of a DDoS attack is to disrupt the normal operation of the targeted system or service. Prevention requires a multi-layered approach including firewalls, intrusion detection, and mitigation services. Improving network security by updating software, using strong passwords, and educating employees about safe computing practices is also important. DDoS attacks can result in downtime, lost revenue, and reputational damage. The use of DDoS attacks is illegal and can result in criminal charges. DDoS attacks have become more sophisticated over time, making prevention and mitigation a continuous challenge.
What is Slowloris :- Slowloris is a type of DDoS (Distributed Denial of Service) tool that can be used to launch a DoS attack on a web server. It works by establishing a large number of connections to the targeted web server and then keeping them open for as long as possible by sending incomplete HTTP requests at regular intervals. This causes the server’s resources to become tied up in processing these incomplete requests and eventually results in a denial of service for legitimate users attempting to access the server.
Slowloris is particularly effective against web servers that use single-threaded processing, as it allows an attacker to tie up all available threads and effectively prevent the server from serving legitimate requests. It is a stealthy attack, as it only requires a relatively small amount of traffic to be effective, and it can be launched from a single machine or multiple machines, making it difficult to trace the source of the attack. Slowloris attacks can be prevented by implementing measures such as rate limiting, server-side buffering, and load balancing.
Installation
You can clone the git repo or install using pip. Here’s how you run it.
- sudo pip3 install slowloris
- slowloris example.com
That’s all it takes to install and run slowloris.py.
If you want to clone using git instead of pip, here’s how you do it.
- git clone https://github.com/gkbrk/slowloris.git
- cd slowloris
- python3 slowloris.py example.com
SOCKS5 proxy support :-
However, if you plan on using the -x option in order to use a SOCKS5 proxy for connecting instead of a direct connection over your IP address, you will need to install the PySocks library (or any other implementation of the socks library) as well. PySocks is a fork from SocksiPy by GitHub user @Anorov and can easily be installed by adding PySocks to the pip command above or running it again like so:
- sudo pip3 install PySocks
You can then use the -x option to activate SOCKS5 support and the –proxy-host and –proxy-port option to specify the SOCKS5 proxy host and its port, if they are different from the standard 127.0.0.1:8080.
Configuration options :-
It is possible to modify the behaviour of slowloris with command-line arguments. In order to get an up-to-date help document, just run slowloris -h
- -p, –port
Port of webserver, usually 80 - -s, –sockets
Number of sockets to use in the test - -v, –verbose
Increases logging (output on terminal) - -ua, –randuseragents
Randomizes user-agents with each request - -x, –useproxy
Use a SOCKS5 proxy for connecting - –https
Use HTTPS for the requests - –sleeptime
Time to sleep between each header sent
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Warning⚠ :- Therefore, it is strongly advised to not use Slowloris or any similar tools for malicious purposes. Instead, it is recommended to use it for ethical and legitimate purposes, such as testing the security of your own website or network, with proper authorization and permission.
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