I've got a lot of clients with mobile devices that want to connect to our corporate network which uses Cisco Anyconnect. How can my clients connect to our VPN using a mobile device?
This is just a guess, but wouldn't a non-proprietary solution (perhaps the mobile version of something like OpenVPN) be a possible solution?
While some mobile phone OSes (Palm OS, etc.) do not support OpenVPN, it is available for Maemo, Windows Mobile 6.5 and below, iOS 3GS+ devices, jailbroken iOS 3.1.2+ devices, Android 4.0+ devices, and Android devices that have had the Cyanogenmod aftermarket firmware flashed or have the correct kernel module installed.
Perhaps some training would be required for your clients, but as an amateur, it seems to me like it might technically be a feasible solution.