I have a UDP server running on my private network.I have a device which is beyond NAT which sends UDP packets to my server through public IP. I am able to receive the UDP packets, parse them and I can view the pay load, src and dest port. Now I need to send an ACK message to that device so I have captured the ip and port numbers and sending a UDP packet to it. But I could not able to view any UDP packets in that device.
My question is as my Device is beyond NAT the IP address and port number I am getting is NAT's or the actual device's ?
How to send the UDP packet to that device through NAT ?