ROUTER A: Peplink 310 serving as the gateway/router/firewall at one location.

ROUTER B: Linksys RV082 serving as the gateway/router/firewall at another location.

I want to VPN these two locations together.

The Peplink has a PPTP server and has proprietary site-to-site vpn if you had another peplink device.

The Linksys has an IPsec vpn server.

VPN A: I also have another spare linksys rv082.

I'm trying to setup the other rv082 (VPN A) behind the peplink (ROUTER A) and get VPN A to talk to ROUTER B.

I setup VPN A with a lan ip address and plugged one of it's LAN ports into the LAN. I was able to get to it's web interface fine.

On ROUTER A I one-to-one nat mapped one of our public ip's to the LAN IP for VPN A. I opened TCP 50-51 and UDP 500 to VPN A.

I configured the VPN settings on VPN A to connect to ROUTER B. I did the opposite for ROUTER B.

But the vpn doesn't connect.

Then I tried pluging VPN A's wan port into the lan, and gave it another LAN IP. I thought perpahs VPN A didn't want to send VPN traffic out over the LAN and wanted do send it over it's WAN.

The vpn still doesn't connect.

It what I'm trying to do even possible?