Intrusion and Firewalls
a) Discuss the three types of security appliances.
b) Explain at least three characteristics and features of the Kerberos authentication system.
c) Authentication is the process of identifying users that request access to a system, network, or device. Access control often determines user identity according to credentials like username and password. User authentication is a method that keeps unauthorized users from accessing sensitive information. Explain the five types of authentication?
d) Pretty Good Privacy (PGP) is an encryption program that provides cryptographic privacy and authentication for data communication. PGP is used for signing, encrypting, and decrypting texts, e-mails, files, directories, and whole disk partitions and to increase the security of email communications. Discuss at least two services provided by PGP.
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