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Network Security (Security Mechanisms (Encryption: the process of encoding…
Network Security
Security Mechanisms
Encryption: the process of encoding data or information so that only authorised parties can access it, and unauthorised parties cannot
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Asymmetric Encryption:
Uses a public key, available to anyone to encrypt data meant only for you, and a private key, only available to you to decrypt the data.
Hashing: applying a hashing algorithm to data to produce a hash value. This can be used to ensure data integrity - confirm that the data has not changed.
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Authentication, Authorisation, Accounting (AAA):
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Attacks
Malicious Software is software that is intentionally included, or inserted, into a system for a harmful purpose
Trapdoors Backdoor, provider a secret or undocumented method to access an application, operating system or on-line service. Trapdoors facilitate a range of activities from benign troubleshooting to illegal access
Logic bomb Software that stays dormant waiting for an event, such as launching a piece of software, or reaching a certain time and date.
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Zombies A computer that has been comprised and can be remotely controlled by a hacker. A bot-net is a collection of zombies
Virus A program that replicates itself by infecting other software, inserting its own code.
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Denial of Service (DoS) is an attack that attempts to prevent legitimate users of a service from using that service
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