Router DrayTek Vigor3900

Prevent Replay Attack
Protocols PPTP, IPSec, L2TP, L2TP over IPSec.
Up to 500 connections simultaneously LAN to LAN, remote access (teleworker-to-LAN), dial-in or dial-out.
VPN trunking VPN load-balancing and VPN backup.
VPN throughput 760Mbps.