https://www.teepublic.com/t-shirt/71732414-its-always-dns

Its always DNS.

But seriously, I’m not familiar with qui, but there could be a whitelist approach to access by default. Maybe it’s blocking access until you whitelist or configure it to accept all.

Its not likely your local firewall is an issue since you can access other services, but the fact that you don’t know means you should find out. I think Debian uses ufw by default, but I think Debian ships with it disabled.

After reading your post body, I realize this isn’t what you’re looking for, but at least for honorable mention reasons:

https://openlearning.mit.edu/courses-programs/mit-opencourseware

That means you remember the thrill of getting the Diamond Multimedia Viper SVGA card (or similar)and being able to “crank up” the resolution beyond 800x600.

Or:

Set Blaster= A220 I5 D9

Enjoy your day, fellow vintage builder.