Let me preface this by saying that I do not have control over our router and getting any configuration changes would be problematic. (strange but true)
We currently have four subnets w/public IPs connected to 4 of the router ports. We are considering introducing wireless and, out of concern for conserving our addresses, are considering using private IPs nated to our current public IPs.
Looking at an ASA 5550, is there a way to configure it such that traffic originating from a particular private subnet is nated through a specific outside port of the ASA to the gateway address on the router?