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In this problem we investigate whether either UDP or TCP provides a degree of end-point authentication. a. Consider a server that receives a request within a UDP packet and responds to that request within a UDP packet (for example, as

In this problem we investigate whether either UDP or TCP provides a degree of end-point authentication.
a. Consider a server that receives a request within a UDP packet and responds to that request within a UDP packet (for example, as done by a DNS server). If a client with IP address X spoofs its address with address Y, where will the server send its response?
b. Suppose a server receives a SYN with IP source address Y. and after responding with a SYNACK. receives an ACK with IP source address Y with the correct acknowledgement number. Assuming the server chooses a random initial sequence number and there is no "man-in-the-middle," can the server be certain that the client is indeed at Y (and not at some other address X that is spoofing Y)?

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a The server will send its response to Y b The server can be certain that the client is …View the full answer


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Computer Networking A Top-Down Approach

Computer Networking A Top-Down Approach

ISBN: 978-0136079675

5th edition

Authors: James F. Kurose, Keith W. Ross

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Posted Date: April 29, 2016 13:42:55
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