Fortigate

VDO_CONFIG_FORTIGATE_SSL_VPN
CONFIG_FORTIGATE_WAN_INTERFACE_PPOE
CONFIG_FORTIGATE_PPTP_VPN

CISCO

VIDEO TUTORIAL

VDO_CONFIG_FORTIGATE_SSL_VPN
CONFIG_FORTIGATE_WAN_INTERFACE_PPOE
CONFIG_FORTIGATE_PPTP_VPN