Setting up Forwarding IP VS on LTM to route SSH traffic

I am trying to route SSH traffic through a LTM onto a subnet. This is a prototype setup and so is slightly restrictive in that I have only one public IP address for external traffic to come into the LTM (which is a LAB license setup), behind this I have a "outer" n/w where I have a jump server and a web server and an "inner" n/w where I have app servers. I have setup HTTP virtual servers and have an iRule to route http traffic to the appropriate web server virtual IP address and onto an app server if needed. So in this setup I am attempting to route SSH requests via the single external IP address into the outer n/w layer. I have tried a network based forwarding IP VS to on available. Example VS definition...

    ltm virtual SSH-Forwarding-VS {
        description "Virtual Server for routing SSH traffic"
        destination 0.0.0.0:ssh
        ip-forward
        ip-protocol tcp
        mask any
        profiles {
            lab-forwarding-fastL4 { }
        }
        source 0.0.0.0/0
        translate-address disabled
        translate-port disabled
        vs-index 11
    }

Yet all that I succeed in achieving is opening a SSH session with the actual LTM itself :-( I used this as a reference: http://packetpushers.net/stateless-routing-f5-ltm/

This prototype environment has been created in the AWS cloud, so the VPC, subnets and security groups have been setup to allow the traffic through. Any suggestions appreciated, thanks!