Suppose an idle TCP connection exists between sockets A and B. A third party has eavesdropped and
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Suppose an idle TCP connection exists between sockets A and B. A third party has eavesdropped and knows the current sequence number at both ends.
(a) Suppose the third party sends A a forged packet ostensibly from B and with 100 bytes of new data. What happens? Hint:
Look up in Request for Comments 793 what TCP does when it receives an ACK that is not an “acceptable ACK.”
(b) Suppose the third party sends each end such a forged 100-byte data packet ostensibly from the other end. What happens now?
What would happen if A later sent 200 bytes of data to B?
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Related Book For
Computer Networks A Systems Approach
ISBN: 9780128182000
6th Edition
Authors: Larry L. Peterson, Bruce S. Davie
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