you have to be careful when using the term redirect.
redirect is a possibility with HTTP.
For other protocols, there is no concept of redirect. But you can forward the traffic from the CSS in the DMZ to a server on the internal network.
The only thing to remember is that the CSS, like a firewall, needs to see all traffic from client to server and from server to client.
So, in your setup, since the CSS will not be inline between client-server, you have to find a way to force the traffic to go back to the CSS.
The easiest solution is to nat traffic going through the CSS.
The drawbacks is that the servers do not see the real client ip address. They just see the nated ip address.
Another solution, more complex is to use policy routing to intercept traffic and forward when need to the CSS.
Regards,
Gilles.
