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Define Key Terms

Define the following key terms from this chapter and check your answers in the glossary:

active fingerprinting

CNAMEs

covert channel

demilitarized zone (DMZ)

denial of service (DoS)

echo reply

echo request

EDGAR database

initial sequence number (ISN)

Internet Assigned Numbers Authority (IANA)

intrusion detection system (IDS)

Nslookup

open source

passive fingerprinting

ping sweep

port knocking

script kiddie

social engineering

synchronize sequence number

Time to Live (TTL)

traceroute

Whois

zone transfer

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