Airlink101 AR686W User Manual page 75

VPN PPTP Pass-Through
VPN IPSec Pass-Through
Click on Save after you've finished all settings.
connection will become very slow, and server may stop
responding because it is not capable to handle too much traffic.
Check this box and the router will enable PPTP packets to pass
through the router for VPN connection
Check this box and the router will enable IPsec packets to pass
through the router for VPN connection.
71