BR200 IPSEC VPN behind my ISP Router

Hi, I have a BR200 router that i recently bought.

Is it possible to do a IPsec VPN on the BR200 to another Vendor VPN device.

Also Is it possible for a VPN connection to be established with the BR200 behind my ISP router which is connected via dsl to the ISP.

Currently my BR200 router has a private IP adddess on its WAN inteface

Attached document will show the diagram