Attacking Without Detection

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Q: Ralph needs to demonstrate a type of attack that an ordinary firewall and IDS system would not detect. It should only be able to be discovered through tcpdump, which captures each packet that enters or leaves a server machine. Ralph therefore initiates his TCP connection with a server using port 80. He uses two distinct hosts on two distinct networks; one network acted as server while the other acted as a client. Even with the most current version of Snort, updated to include the latest rule sets, installed and running throughout the demonstration, Snort did not raise an alarm about any attack. Which of the below attack types does Ralph’s demonstration explore?

a. Inside-Out Attack

b. White-listing attack

c. Covert channel attack

d. Tor attack

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