I am in the process of configuring a vpn gateway which is going to sit behind a PepLink 580. I will be using the firewalling capabilities of the 580 so I need to allow L2TP traffic to be forwarded to my VPN server.
I can’t managed to find this option in the box anywhere……
thanks for the post, so by simply enabling IPsec NAT-T the 580 will allow L2TP over IPSEC to pass through? I thought I would have to instruct the 580 to direct this traffic to my L2TP VPN Gateway servers internal IP… Is this not the case?