Localhost is your own computer. Port 11501 is a specific "door" that software uses to communicate with your web browser.
: Handling payment and receipt vouchers for accounting. Why Does It Need "HTTPS" Verification? https localhost11501 verified
With mkcert certificates, the browser verifies the connection. Localhost is your own computer
This is the most intriguing part. Normally, a browser visiting https://localhost throws a warning: “Your connection is not private” (NET::ERR_CERT_AUTHORITY_INVALID). That’s because typical localhost certificates are self-signed or generated on the fly by tools like mkcert . https localhost11501 verified