> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://ajuda.lauth.com.br/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Port scans prevention


The protection of your device's ports is activated natively and by default. The blocking is done to prevent websites from checking for open ports on your system.

`Among the blocked ports are the following: **8000, 3389, 5900, 5800, 7070, 6568, 5938, 5901, 5902, 5903, 5279, 5931, 5939, 5944, 5950, 6039, 6040, 6333, 63333**`

## Understand how it works

In more technical terms, a port is a communication endpoint. When an application is running on the computer, it opens a port. This port acts as an address with which applications can interact with each other.

## About port scanning

Websites, using local port scanning through WebSockets, can see which ports are open on a particular computer and, as a result, understand which program our users are running. According to data studies, sites like Facebook, eBay, or Amazon use this fingerprinting method, although it is illegal in some countries and a gray area in others.

Updated on: 15/06/2023