014.01.52.4. The text mentions the need for dissecting packets beyond the internet layer, particularly focusing on UDP and TCP port numbers. Can you elaborate on why this additional information is essential for NAT, especially in the context of TCP transport layer complexity?
There is no information in the internet layer port of a packet to distinguish among multiple requests from the same host to the same destination. NAT goes beyond the internet layer and dissect packets to pull out more identifying information particulary UDP and TCP port numbers from transport layer. UDP is a fairly easy protocol as there are ports but no connection, but the TCP is a complex transport layer as it has several port configurations.
The text emphasizes the necessity of examining packets beyond the internet layer, with a specific focus on UDP and TCP port numbers, explaining why this additional information is vital for NAT, particularly in dealing with the intricacies of the TCP transport layer.
Within the internet layer, there is no port information in a packet to distinguish among multiple requests from the same host to the same destination. NAT extends its analysis beyond the internet layer, scrutinizing packets to extract additional identifying information, particularly UDP and TCP port numbers from the transport layer.
While UDP is relatively straightforward with ports but no connection, TCP introduces complexity with multiple port configurations, requiring a more intricate approach in the NAT process.
