The HTTP protocol is a request-response protocol used for transferring data over the internet. However, when it comes to securing sensitive information, the plain http request may not be enough.
Using port 443 does not necessarily mean that all HTTP requests are being sent over HTTPS. In fact, even if a website uses port 443, some internal processes may still be using other ports (like the default HTTP port, 80).
The implications of using port 443 for secure connections are significant. If an attacker can intercept and read data sent over HTTPS, they could potentially gain access to sensitive information on your server.
The choice of port number for secure connections should be carefully considered. While using port 443 is a good starting point, it's essential to ensure that all internal processes are also using secure ports to provide an additional layer of protection.
https://conferences.law.stanford.edu/ipsummerschool2022/2013/12/29/porta-est-nascetur-proin