MP 1,1-5,1 Brave Browser cannot connect to web server VM

[danallen]

Problem:

1. Brave and Firefox cannot connect to web server on my local network.
2. Safari connects no problem

I have been running system like this for 15 years.

Recent changes: upgraded my MacPro macOS 15.3 (Sequoia with Open Core Legacy Patcher). The webserver is built with Parallels Desktop instead of VMWare Fusion. VMWare will not run on Sequoia with Open Core Legacy patcher.

Steps to reproduce:

1. Enter the ip address of the web server into browser address bar

Expected result
Website will come up in browser, regardless of browser

Actual result
Brave says the site cannot be loaded. Firefox says site cannot be reached
Safari has no problem

Question: how can the different browsers produce such different results?

ssh connection working with no known issues

 

[flaubert]

Your screenshot shows that Firefox is trying to connect with https, which requires a trusted certificate. I believe that Firefox uses its own internal database of trust certificates by default; perhaps your VM is offering a self-signed certificate? You can probably coerce Firefox to accept/recognize a locally generated (self-signed) certificate with this support article:

Automatically trust third-party root certificates | Firefox Help

Root certificates are the backbone of the security system that underpins HTTPS web traffic. Firefox, like most web browsers, includes a pre-installed set of trusted root certificates.

support.mozilla.org

 

[danallen]

I have not worked this problem through to solution. Safari gets to the debian VMs I have on my mac, so I just run that. Sooner or later i will solve this problem

 

[DJ Rob]

Had a similar issue with Edge not being able to connect to my NAS on the local network. Solved it by allowing Edge in System Settings/Privacy & Security/Local Network.

This happened after a popup that said something like: "Allow Microsoft Edge to find devices on the local network", which I declined.