An Introduction to Modern Network Security and Cryptography
Network security consists of the policies, processes, and practices adopted to prevent, detect,
and monitor unauthorized access, misuse, modification, or denial of a computer network and
network-accessible resources. In today's digital landscape, securing data transmission is highly
critical.
One of the fundamental pillars of security is cryptography, which ensures confidentiality,
integrity, and authenticity. Encryption algorithms like AES (Advanced Encryption Standard) and
RSA (Rivest-Shamir-Adleman) are widely used to secure sensitive information. Additionally,
network administrators implement firewalls, intrusion detection systems (IDS), and virtual private
networks (VPNs) to protect the perimeter of corporate infrastructures from modern cyber threats
and unauthorized intrusions.