User:Darkyto330/sandbox

Fiddler is a group of networking products developed by Progress Telerik that includes Fiddler Everywhere, Fiddler Classic, and FiddlerCore (NET Library).

Fiddler Everywhere
The most modern tool from the Fiddler's product family is Fiddler Everywhere. It's a network tool used for web debugging that monitors, inspects, edits, and logs all HTTP, HTTPS, WebSocket , gRPC , and SSE traffic. It also allows users to send requests between their computer and the internet, and modify incoming and outgoing data. Fiddler Everywhere is a high-performance, cross-platform proxy that works with any browser, operating system, or platform.

Fiddler Everywhere is an intermediate forward proxy that uses a unique certificate authority (CA) to capture incoming and outgoing internet activities of applications. It acts as a Transport Layer Security (TLS) proxy, standing between the client application (e.g., a browser or other application that sends HTTP(S) requests) and the server that receives the HTTPS requests. The HTTPS responses are returned to the Fiddler Everywhere proxy, which passes the traffic back to the client application.

Features

 * System Traffic Capturing - Fiddler Everywhere inspects and logs all HTTP(S) traffic between your computer and the Internet and enables you to capture traffic from virtually any application that respect the operating system proxy.
 * Independent Browser Traffic Capturing - An option for automatic, sandboxed browser HTTP(S) capturing without modifying the operating system proxy.
 * Terminal Traffic Capturing - An option for automatic, sandboxed, terminal HTTP(S) capturin
 * Mobile Traffic Capturing - Capture and inspect traffic on devices running on iOS and Android.
 * Traffic Inspection, Analysis, and Statistics - Traffic-analyzing functionality, which renders the captured information in a structured way and visualizes various statistical data for one or more captured sessions
 * Modern HTTP and TLS version support - Supports obsolete and modern SSL and TLS versions, including TLS 1.2 and TLS 1.3. Additionally the tool supports the conventional versions of the HTTP protocol including HTTP/1.1 and HTTP/2.
 * Request and Response Mocking - Supports the mocking and modification of requests and responses on any application.
 * API Composing - API Composer, which allows you to test REST and SOAP APIs by creating and sending requests and saving and sharing composed APIs

=== How Fiddler Everywhere works  === Most modern applications use additional security measures like Transport Layer Security (TLS) to protect user data and prevent unauthorized third parties from intercepting the traffic.

To capture secure traffic over HTTPS with Fiddler Everywhere, you need to explicitly grant trust by installing and enabling the Fiddler root trust certificate. Adding the Fiddler Everywhere Certificate Authority (CA) in the Trusted Certificate Authority Manager of your operating system allows the man-in-the-middle approach to intercept the encoded TLS data. Once this is done, the Fiddler Everywhere application can decode the otherwise encrypted HTTPS traffic.

Operating System support
Fiddler Everywhere works on the following operating systems


 * Windows 10
 * Windows 11
 * macOS
 * Linux