Hi SK,
Thanks a lot!
I understood you
There's something I don't agree with in the diagram you posted.
The PC's local IP Address is 192.168.0.50.
The PC's random port is 1029.
When the Server sends packet to the PC, the DEST IP Address of this packet should NOT be the PC's, but it SHOULD be the Router's WAN IP Address.
Say that the Router's address is
192.168.0.1 and the Router's WAN IP Address
12.34.233.2, then the Packet from Server to PC should be with:
Dest IP:
12.34.233.2 (NOT 192.168.0.50)
Dest Port: 1029
Am I correct?