A little uncertain how to forward ports to a device that gets it's address via DHCP. I suppose I could bind it to an IP with a mac address. but I dont want to do that (I have my reasons) So any way I have a device that gets an address in the 192.168.1.0/24 range. my WAN address is static 64.x.x.x and my device needs to communicate on udp port 4500. I would love an example on how to do this. thanks folks!!

Either write custom scripts, or use UPnP.

Yup, UPnP, forgot about that. thanks much!