IPsec/XAuth mode is also called “Cisco IPsec”. This mode is generally faster than IPsec/L2TP with less overhead. IPsec/XAuth ("Cisco IPsec") is natively supported by Android, iOS, and MacOS. There is no additional software to install for them.
This is the next part after you successfully set up your own IPsec VPN server. Following these steps allow you to configure your Android, iOS, MacOS, and Linux machine using IPsec/L2TP VPN.
IPsec/L2TP is natively supported by Android, iOS, OS X, and Windows, so there is no additional software to install for them. Setup should only take a few minutes. For Linux users, additional L2TP network manager package needs to be installed.