In computer networking, '''Layer 2 Tunneling Protocol (L2TP)''' is a tunneling protocol used to support virtual private networks (VPNs). It is more secure than PPTP but, because it encapsulates the transferred date twice, but it is slower and uses more CPU power. | In computer networking, '''Layer 2 Tunneling Protocol (L2TP)''' is a tunneling protocol used to support virtual private networks (VPNs). It is more secure than PPTP but, because it encapsulates the transferred date twice, but it is slower and uses more CPU power. |