Control the Network Bandwidth of Others

[Kurupt®]

On occasion, one might wish to consume all the bandwidth on the network, ensuring the most optimal connection possible or alternatively, wishing to slow down the connection speeds of other network users for the purpose of social engineering. The capacity to regulate the upload and download speeds of fellow network users can be beneficial when combined with Man-in-the-Middle cyberattacks designed to cause individuals to believe their internet connection will be throttled except they consent to an update (malware), grant personal login information (phishing), etc.


To accomplish this, we shall employ a tool named "Evil Limiter":

GitHub - bitbrute/evillimiter: Tool that monitors, analyzes and limits the bandwidth of devices on the local network without administrative access.​

Tool that monitors, analyzes and limits the bandwidth of devices on the local network without administrative access. - bitbrute/evillimiter
github.com

1. Within your Kali VM, open Terminal and input the following command:

Code: Select all
sudo evillimiter

Image
You are now within the Evil Limiter control centre.

2. Subsequently, we will perform a scan to detect all the hosts or computers present on the network that can have their connection throttled.

Code: Select all
scan

Image
As visible, there are two individuals sharing the same network, whose connection speeds can be regulated.
Proceed by typing:

Code: Select all
hosts

Image

3. Should you wish to reduce the download speed of the first host to 300 kbs, type:

Code: Select all
limit 0 --download 300kbit

To limit the upload speed to 300 kbs, input:

Code: Select all
limit 0 --upload 300kbit

To impose a download speed of 300 kilobits per second on all hosts on the network, input:

Code: Select all
limit all --download 300kbit

To restrict the upload speed of all hosts on the network to 300 kilobits per second, type:

Code: Select all
limit all --upload 300kbit

If you have chosen host #1 as an example, and you decide to release the throttled upload or download speeds, type:

Code: Select all
free 0

To restore the speeds of all hosts on the network to their original levels, enter:

Code: Select all
free all

Evil Limiter offers a variety of functions. If you are interested in exploring them further, I encourage you to experiment with it.