A web browser is a convenient tool for gathering information about a target. By default, it connects to TCP port 80 for HTTP and TCP port 443 for HTTPS. While these default ports aren’t shown in the address bar, custom ports can be used. For example, accessing https://127.0.0.1:8834/ connects to port 8834 on localhost via HTTPS, displaying a web page if an HTTPS server is active on that port.