Is there a way to preserve the source port for UDP packets that use a PAT pool?
Here is what I need:
The client (18.104.22.168) sends a UDP packet from port 5060 to port 5060 on our external 22.214.171.124. This packet is port forwarded to our internal server 10.10.10.10 with the original source and destination port. The server then sends a UDP response to the client from port 5060 to port 5060. The server is in a PAT pool that only contains the address 126.96.36.199. The ASA changes the source port and our client ends up rejecting the packet because the source port is not what it expected.
How can I preserve the original source port when the packet goes through the PAT pool?