IPSec forwarding to OpenVPN in the same host

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http://serverfault.com – I have the following setup on an EC2 instance: an IPSec strongSWAN implementation acting as frontend to accept connections from road warriors clients and OpenVPN Access Server accepting a single connection from an office host (with masquerading) in order to make it a gateway to my office network. What I don't understand is how to configure strongSWAN and/or OpenVPN and/or host routing in order to "connect" IPSec managed clients to the OpenVPN server and, through this, to the office network. Thank you very much in advance (HowTos)