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FAQ

OpenVPN configuration files update issue on Windows

Windows may retain old OpenVPN configuration files even after uninstalling/reinstalling the VPN client. This can explain why your VPN no longer works after an update of these files by the CRI team.

In this case, in your file explorer, go to C:\Users\<my-user>\OpenVPN\config\ and delete existing entries, then retrieve the connection configuration

Who can use the ISIMA VPN?

  • Students

  • Engineering students in all three years.

  • Master 1st year
  • Master 2nd year

    • International of computer science
    • Software engineering
    • Information systems and decision support.
  • ISIMA and LIMOS staff.

Can I open multiple simultaneous connections?

No. Only one device can be connected per user.

For example, if your smartphone uses a VPN connection, you won't be able to establish a tunnel with your desktop PC: after authentication, you will be disconnected. Without any error message.

Can't request assigned address

This message sometimes appears on macOS, and you cannot connect. This is a known bug, not yet fixed by Apple. The solution is to restart the session.

Can I use the VPN from within ISIMA?

No, because it unnecessarily consumes resources. The VPN is intended for external use only.

Internal DNS name resolution issue

OpenVPN profiles adapt more or less well depending on the operating system. Resolving internal DNS names on Archlinux can sometimes be problematic, for example.

You need to install the package:

  • openvpn-systemd-resolved (Ubuntu/Debian)
  • openvpn-update-systemd-resolved (Archlinux)

You didn't find your solution?

Create a ticket at https://support.isima.fr