StaticNAT, PortForwarding and Firewall current functionality in SRX is not similar to the Virtual router. This functional spec describes the what configuration possible on the SRX and also the limitation of SRX compared to the functionality in VR.
Please find the functional spec here: https://cwiki.apache.org/confluence/display/CLOUDSTACK/Static+NAT,+Port+Forwarding+and+Firewall+Implementation+on+SRX Please provide your comments on configuring the SRX device to get functionality similar to VR. Thanks, Jayapal