Description: The ‘X-Forwarded-Proto’ header is a crucial element in network and web application architecture, indicating the protocol used by a client to connect to a server through a proxy or load balancer. This header is primarily used in environments where client requests pass through one or more proxies before reaching the target server. Its main function is to provide information about whether the original connection was made via HTTP or HTTPS, allowing the server to properly handle requests and redirect users based on the protocol used. This is especially relevant in applications that require proper management of security and privacy, as the use of HTTPS is essential for protecting transmitted information. Additionally, the ‘X-Forwarded-Proto’ header helps developers implement redirects and generate secure links in web applications, ensuring that users are always directed to the correct version of the site, whether secure or not. In summary, this header is an essential tool for the proper configuration and functioning of modern web applications, particularly in architectures that use proxies and load balancers.