EnGenius Technologies ENH500 - Manual (Page 61)

9.3 VPN Pass Through
VPN Pass Through is used to allow certain protocols to be tunneled through an IP network
such as PPTP and L2TP, or to implement a secure exchange of packets at the IP Layer such as
IPSec.
PPTP Pass Through Place a check to enable PPTP protocol passes through WAN.
L2TP Pass Through Place a check to enable L2TP protocol passes through WAN.
IPSec Pass Through Place a check to enable IPSec protocol passes through WAN.
Accept / Cancel Press Accept to confirm the changes or Cancel to return
previous settings.
Accept does not apply the changes – you must go to Status -> Save / Load
to apply the new settings. Please refer to Chapter 4.1 for more information.