Network Security

Livro digital

Título:
Network Security

Autor:
OpenLearn

Categoria:
Tecnologia > DevOps

Doador:
Raffaello D. N.

Sinopse:
Every network carries information worth stealing and systems worth disrupting. Understanding the principles behind attack and defense matters more than memorizing today's tools, and this course makes that distinction explicit from the start: the first chapter is an upfront glossary of 40+ terms, from passive attack and ciphertext to demilitarised zone and nonce, so readers speak the same language before the technical argument begins. The material moves from passive and active attack taxonomies through the fundamentals of symmetric and asymmetric encryption, explaining why key length alone does not guarantee security. It then covers how encryption is implemented at different network layers before turning to authentication mechanisms, certification authorities, digital certificates, and the layered world of firewalls: packet-filtering routers, application-level gateways, and circuit-level gateways. Self-assessment questions with answers are embedded throughout, making this a structured learning experience rather than a reference to skim. Produced by The Open University as part of its level-3 Computing & IT curriculum, this compact 58-page unit delivers the conceptual backbone that practitioners need to evaluate and compare security solutions on their own terms, without relying on vendor narratives or chasing the threat of the week.