VPN-X Server is a Java cross-platform L2TP/IPsec and SSL/TLS VPN server solution. It can support iPhone/iPad built-in VPN client; we also provide special VPN-X client.
VPN-X Server comes in Free, Professional, and Business editions. Purchase options can be found here.
Note: Although Finder indicates that this is version 1.0, the developer states that this is version 220.127.116.11.