"Cannot be reached" on various browsers

General
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1

I have been able to deploy my app, I’m able to access the application on my computer, but others on a particular network aren’t able to access it (hospital).

The message on the browser simply states: “Cannot be reached“ and it suggests proxy settings and firewall as the problem.

I’m not really able to manage to adjust the settings on colleagues’ computers, so I was wondering what I can do in my app to allow access to it.

What’s preventing access/sending warning messages to others who are trying to use the application?

This is the first time I’m using Fly.io so any advice would be helpful, thank you.

2

it’s possible the target network is blocking fly.io for some reason. you can try the following to see if it would help:

  • use a custom domain rather than the default .fly.dev
  • use a dedicated rather than shared IPv4 address (this will cost $2/mo): fly ips allocate-v4 and update your DNS with the new address
3

It would not be surprising for a hospital to have a very locked-down, very filtered, DNS and internet system. See if your colleagues can access the site on their mobile phones.

4

Yup, mobile phones work fine/outside computers work fine! It’s specific to the network. I changed to have IPv6 and IPv4 as well. No go. I think I’ll try to add a domain to it. That was the next suggestion I received.