Both of these parts are often employed with each other, under the denomination of L2TP/IPsec, as without having encryption the tunneling will be worthless. Please note that L2TP/IPsec are now not secure encryption protocols. The other apps, such as the Mac VPN and Android VPN, also see comprehensive screening, and https://vpn56890.blogkoo.com/vpn-fundamentals-explained-51436012