(CIS 175 -Intro 2 Ntwrking) Wk 7 Lab

(CIS 175-Intro 2 - change of the address field When a packet is received from the outside destined to the inside the destination address is

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We are studying networks and this layer is one of the most important in understanding how networks function Excellent. Thank you. You made my day :) LAB Wk 7 Action 1 Describe the process of NAT (network address translation). NATs are IP address translators. They are active units placed in the path to intercept the data. They may forward the packet onward with or without alteration to the contents of the packet, or may elect to discard the packet. The header of an IP packet contains the source and destination IP addresses. If the packet is being passed in the direction from the inside to the outside, a NAT rewrites the source address in the packet header to a different value, and alters the IP and TCP header checksums in the packet at the same time to reflect the
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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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This note was uploaded on 01/19/2012 for the course COMPUTER S 100 taught by Professor Brown during the Spring '11 term at Strayer.

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