Install and configure Open Source VPN client on Linux

OpenConnect is an open source SSL VPN client shipped with widely used Linux distributions like Fedora, Arch, Debian, Centos or Ubuntu. It can be used as an alternative to Pulse Secure Client.

OpenConnect version

Make sure the OpenConnect version that was shipped with your Linux distribution is 7.05 or above.

Install on Fedora

$ sudo dnf install openconnect
...

When it asks for confirmation for the package installation, enter “Y” or “y”.

Install on CentOS (or RedHat)

$ sudo yum install epel-release
...
$ sudo yum install openconnect
...

Install on Ubuntu (or Debian)

$ sudo apt-get install openconnect
...

Install on Arch

$ sudo pacman -S openconnect
...

Connect to VPN

$ sudo openconnect --juniper vpn.ku.edu.tr/linux
...

Use your KU NetID and Password to authenticate.

Terminal window where the connection has been established must remain open or your VPN connection will be lost.

Check VPN connection status

Check if the tun0 interface is up:

$ ifconfig tun0
...

Disconnect from VPN

Terminate the openconnect command with CTRL+C or close the terminal window

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