Edimax BR-6314K User Manual page 22

PPTP: The Point-to-Point Tunneling Protocol (PPTP) is a method for implementing virtual private network.
Server: Specify IP Address of the PPTP Server.
IP Address and Subnet Mask: the private IP address and subnet mask your ISP assigned to you.
Connection ID: optional. Input the connection ID if your ISP requires it.
Maximum Idle Time: the time of no activity to disconnect your PPTP session. Set it to zero to disable this feature. If
Auto-reconnect is enabled, this product will connect to ISP automatically, after system is restarted or connection is
dropped
(e) L2TP
Layer 2 Tunneling protocol can support multi-protocol Virtual.