Remote Access SSL-VPN to IPsec site-to-site

Hi everyone,

I have a problem that might be easy to solve but I'm not able to by myself.

At my company we have 2 different sites. SSL VPN access is possible to each one with access to the corresponding network. The only thing that does not work is to access the other site's network via Remote Access (Astaro's SSL Client connected to Site 1 -> no access to network of Site 2)

Maybe it is not clear what I need (I'm not a native english speaker)

Working:
Site 1's network -> IPsec -> Site 2's network
Remote Access SSL -> Site 1's network
Remote Access SSL -> Site 2's network

Not working:
Remote Access SSL connected to Site 1 -> over sts IPsec -> Site 2's network

I'm not sure where to begin the configuration to solve that so it would be nice to get a hint.

Many thanks in advance!

Eddie