The School of Computing uses OpenVPN

If you have an account on the CS domain, you may access campus resources through our VPN server.

IMPORTANT NOTE as of Fall 2018, you must have OpenVPN 2.4.X or later installed or your connection will fail to connect. If you get a fail to connect message, uninstall your version of OpenVPN and install the one below. If you have a MAC, make sure you are on 2.4 or later.


  1. Install: openvpn-firewall-UDP4-1194-install-2.4.4-I601 S18.exe

  2. Run OpenVPN GUI as administrator This is required or your connection will not work.

  3. Right click the icon in the system tray and click connect
  4. Enter your CS username and Password
  5. If you have problems try again running the program as administrator

macOS/OS X

  1. Download and install Tunnelblick from or use your favorite OpenVPN client

  2. Download the .opvn file firewall-UDP4-1194-viscosity-config.ovpn

  3. Double-click the .ovpn file. This will add the configuration to Tunnelblick.
  4. Connect or disconnect using the icon running on the right side of the menu bar.

Note: I got an error that this may not work in future versions ..., but it does work. (2018-08-01)


  1. Download the
  2. Ubuntu and somewhat generic instructions


Symptom: Your connection yo-yo's up and down every 60 seconds.

Fix: You are connected to the VPN with two computers using the same account. Disconnect from the VPN on one of your computers.

NetworkConfiguration/OpenVpnConfiguration (last edited 2020-06-15 17:17:01 by scot)