Unformatted text preview: change of the address field. When a packet is received from the outside destined to the inside, the destination address is rewritten to a different value, and again the IP and TCP header checksums are recalculated Action 2 Describe in detail the importance of the network layer? We are studying networks and this layer is one of the most important in understanding how networks function. It is here that we find protocols that tie networks together to create internetworks, and also where cross-network addressing and routing are performed. Not to mention the internet protocols are also here at this layer, which by anyone’s standards would be of high importance to keep running....
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- Spring '11
- IP address, TCP header checksums