I have a poptp server running on a old Fedora server but I'm upgrading to an Ubuntu 10.04 server.
I was wondering if there are any good, reasonable secure alternatives to poptop that in can install on our new Ubuntu server as a way to get VPN access from Windows clients (XP and 7) to get remote access into our Intranet.
We only use the VPN to access files located inside the network; we do not need to use it as a proxy/gateway.
I've looked into OpenVPN but it seemed way too complicated and I would prefer something built into Windows. A Windows 7 only solution is OK.
Windows 7 has PPTP, L2TP/IPSec, SSTP, and IKEv2 built in and Windows XP has PPTP and L2TP/IPsec built in. Which of these can easily be served by an host on our Ubuntu server?