IPSec Pass Through
Internet Protocol Security (IPSec) is a suite of protocols used to implement secure exchange of packets at the IP layer. To allow IPSec tunnels to pass through the Router, IPSec Pass Through is enabled by default.

PPTP Pass Through
Point to Point Tunneling Protocol (PPTP) Pass Through is the method used to enable VPN sessions. PPTP Pass Through is enabled by default.

L2TP Pass Through
Layer 2 Tunneling Protocol (L2TP) Pass Through is the method used to enable VPN sessions. PPTP Pass Through is enabled by default.

Click Save Settings to save the settings or click the Cancel Changes button to undo your changes.