Information Security Resources

Entries Tagged ‘integrity’

Firewall: The Realization of a Company’s Internet and Network Access Policy

The original definition of a firewall is: “a partition made of fireproof material to prevent the spread of a fire from one part of a building or ship to another or to isolate an engine compartment, as on a plane, automobile, etc.” 1 Today, in the computer world, the term refers to any piece of […]

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Cryptography – Revisited

Cryptography, or cryptology, derived from the Greek words for “hidden” writing or speaking, is the practice and study of hiding information. Until modern times, cryptography referred almost exclusively to encryption, the process of converting ordinary information (plain text) into unintelligible gibberish (confidentiality). Cryptography is now considered to be a branch of both mathematics and computer […]

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TCP/IP Protocol: Why It is Not Secure

TCP/IP (Transmission Control Protocol / Internet Protocol) is a set of communications protocols that implement the protocol stack on which the Internet and most commercial networks run. However, from a security standpoint, it is not inherently secure. To understand why, we must first look at the history of TCP/IP. TCP/IP was designed more than 30 […]

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