I use my personal website when testing web applications before they are mature enough to go in production on a dedicated server/website (distinct from my own). I am not a professional though, these are just side projects so there is no clear routine there and I don't have easy access to multiple machines or domains to clearly split things during the testing phase.

Therefore, when I need to share a test applicaton with collaborators, I set up restricted access with credentials, and users end up on domain.tld/subfolder. domain.tld is public and there is nothing to hide, but I don't want collaborators invited to check out /subfolder/ to be tempted to browse the full website or even know what the domain name is, it simply is not what I want them to preview.

Can I avoid that, and maybe prevent their browser from showing the domain name if they reach the test application using https://IP:PORT? The test application doesn't need to be indexed by search engines, it is not publicly available anyway.

I use Caddy as webserver but I do not know if this would be achieved with the webserver or some other way. This is what the relevant part of my caddyfile looks like:

domain.tld, www.domain.tld {

    tls me@email.com
    # Main website
    root * /var/www/domain.tld/website

    # Serve subfolder for testapplication and restrict access
    rewrite /subfolder /work/testapplication.html
    route /subfolder* {
        basicauth {
            username1 hashpasswordLKAJAJDLKALDJALDJLAJD
        reverse_proxy localhost:8002
    php_fastcgi unix//run/php/php7.3-fpm.sock

For convenience, I would like to keep serving to domain.tld/subfolder just in case (and for my own use), but would only share https://IP:PORT to those who don't need to know about domain.tld.

  • 1
    Make sure you website doesn't do any redirects to the domain. As long as you only share the IP:port and you don't have any reverse DNS records there is no way to find the domain from the IP address. Jan 13 at 13:18

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