URL: https://app.jetkvm.com/
Browser / Version: Firefox 136.0
Operating System: Windows 10
Tested Another Browser: Yes Chrome
Problem type: Site is not usable
Description: Page not loading correctly
Steps to Reproduce:
jetkvm/kvm#414
I've narrowed it down to some incompatibility with app.jetkvm.com, Firefox and using a Virtual Private Network. I've test with both the PIA VPN app and Tunnelblick VPN client that connects to PIA VPN servers. Firefox has no other issues with any other sites using the VPN, only app.jetkvm.com is the problem. I've tried different VPN servers and it has the same effect.
Chrome works while on the same VPN with app.jetkvm.com so if it was a VPN IP blocking problem I wouldn't expect Chrome to be able to connect through the same VPN IP address.
tl;dr — As long as the VPN is disconnected Firefox work with app.jetkvm.com. Chrome works either way. Finding this the same on both Windows and Mac computers running latest Firefox.
InariTheFox
on May 5, 2025 · edited by InariTheFox
I have been able to confirm that using the combination of ExpressVPN & Firefox does duplicate the issue as reported. Using inspection via developer tools there are no issues with HTTP traffic, so this comes down to WebRTC and Firefox while on a VPN.
Upon inspection using debugging tools within Firefox, the following logs were captured:
https://gist.github.com/InariTheFox/6f0c90843528fc6e1a0ccb05b0fc20ea
The IP address which has been blanked out is my network's public IP. Firefox, when negotiating with the STUN server is using invalid route information, leaking with your network's IP address and not the VPN's. It appears that WebRTC is leaky on a variety of browsers, including Mozilla and Chromium based ones, which would result in this issue happening.
Because of the leaked IP addresses being used versus the VPN's, Firefox is not able to negotiate with the STUN server, causing the failure. This is most likely out of the hands of JetKVM, and actually falls on Mozilla's lap.
Browser Configuration
From webcompat.com with ❤️
URL: https://app.jetkvm.com/
Browser / Version: Firefox 136.0
Operating System: Windows 10
Tested Another Browser: Yes Chrome
Problem type: Site is not usable
Description: Page not loading correctly
Steps to Reproduce:
jetkvm/kvm#414
I've narrowed it down to some incompatibility with app.jetkvm.com, Firefox and using a Virtual Private Network. I've test with both the PIA VPN app and Tunnelblick VPN client that connects to PIA VPN servers. Firefox has no other issues with any other sites using the VPN, only app.jetkvm.com is the problem. I've tried different VPN servers and it has the same effect.
Chrome works while on the same VPN with app.jetkvm.com so if it was a VPN IP blocking problem I wouldn't expect Chrome to be able to connect through the same VPN IP address.
tl;dr — As long as the VPN is disconnected Firefox work with app.jetkvm.com. Chrome works either way. Finding this the same on both Windows and Mac computers running latest Firefox.
InariTheFox
on May 5, 2025 · edited by InariTheFox
I have been able to confirm that using the combination of ExpressVPN & Firefox does duplicate the issue as reported. Using inspection via developer tools there are no issues with HTTP traffic, so this comes down to WebRTC and Firefox while on a VPN.
Upon inspection using debugging tools within Firefox, the following logs were captured:
https://gist.github.com/InariTheFox/6f0c90843528fc6e1a0ccb05b0fc20ea
The IP address which has been blanked out is my network's public IP. Firefox, when negotiating with the STUN server is using invalid route information, leaking with your network's IP address and not the VPN's. It appears that WebRTC is leaky on a variety of browsers, including Mozilla and Chromium based ones, which would result in this issue happening.
Because of the leaked IP addresses being used versus the VPN's, Firefox is not able to negotiate with the STUN server, causing the failure. This is most likely out of the hands of JetKVM, and actually falls on Mozilla's lap.
Browser Configuration
From webcompat.com with ❤️