The NetworkManager can display available network hardware and wireless networks. But, I’m unable to add VPN support as the Add tab is greyed out. I need to use both PPTP and Cisco vpn clients. How do I fix this problem under Debian or Ubuntu Linux?
How to fix it :).
The Add tab is greyed out when required plugins are not installed for Gnome NetworkManager. The following plugins should be installed under Debian / Ubuntu Linux:
- network-manager-openvpn and network-manager-openvpn-gnome – network management framework OpenVPN plugin GNOME GUI
- network-manager-pptp and network-manager-pptp-gnome – network management framework PPTP plugin GNOME GUI
- network-manager-strongswan – network management framework strongSwan ipsec vpn plugin
- network-manager-vpnc and network-manager-vpnc-gnome – network management framework (VPNC plugin GNOME GUI)
To install all of the above plugins use the apt-get command as follows:
sudo apt-get install network-manager-openvpn network-manager-pptp network-manager-vpnc network-manager-pptp-gnome
The following plugins should be installed under RHEL / Fedora / CentOS / Scientific Linux / Red Hat Enterprise Linux desktop systems:
- NetworkManager-openvpn : NetworkManager VPN plugin for OpenVPN
- NetworkManager-pptp : NetworkManager VPN plugin for pptp
- NetworkManager-vpnc : NetworkManager VPN plugin for vpnc
yum install NetworkManager-vpnc NetworkManager-pptp NetworkManager-openvpn
Now, you can add vpn connection to your system using NetworkManager itself. You may need to restart the NetworkManager as follows: