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Problem
(a) As a forensic investigator, you are needed to trace the source of an email. It is suspected that the email header has been forged. Show how you would proceed to be able to find the IP address of the person who has sent the email. Your discussion should involve the different approaches you would use considering the presence or absence of a proxy server in the sender's network.
(b) Attackers use anonymous remailers to send email to recipients.
(i) Contrast and Compare pseudonymous remailers and cypherpunk remailers.
(ii) Show the main disadvantage of the penet.fi anonymous remailer.
(iii) Does the MixMinion remailer (Type III) provides two way communication? Justify your answer.
(c) Name three email forensics tools.
(a) Using the extended Euclidean algorithm, find the multiplicative inverse of 504 mod 67. (b) Decrypt the following ciphertext, which has been encrypted using Caesar cipher:
Explain the architecture of ISDN.....?
(a) Show four Network Security attacks. How do they compromise security? (b) In what ways do the following devices or services contribute to security: (i) Firewall (ii) In
Base lining • Organizations do not have any contact to each other • No two organizations are identical to each other • The best practices are a moving target • K
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Application Gateways / firewall The application level firewall is installed on a dedicated computer; also called as a proxy server. These servers can store the recently accessed
Question: (a) Besides privacy, what other security functions does Pretty Good Privacy (PGP) provides? (b) What is the Post Office Protocol (POP) used for? Why is it impo
What is information Information comprises the meanings and interpretations which people place upon the facts, or data. The value of information springs from the ways it can be i
PACKETS: Packet is a generic word that define to small code of data. Packet have different format. Each hardware needs different packet format. FRAME: A hardware frame or
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