Network security encompasses technologies, policies, and practices designed to protect the confidentiality, integrity, and availability of computer networks and data. Key components include encryption tunnels for privacy, secure shell protocols for remote administration, honeypot-style tokens for threat detection, and steganographic methods for covert communication.
Virtual Private Networks (VPNs)
A virtual private network (VPN) is a technology that creates an encrypted connection between a user’s device and a remote server, routing internet traffic through that server to mask the user’s IP address and location. VPNs are commonly used to enhance privacy by preventing internet service providers and network administrators from viewing browsing activity, and to access services that may be geographically restricted. The encryption protects dat
Secure Shell (SSH)
ssh (Secure Shell) is a cryptographic network protocol for operating network services securely over an unsecured network. It is an indispensable tool for linux, cloud-computing, DevOps, and server administration, providing a secure channel for remote command-line access.
- Core Functionality: Establishes encrypted connections to prevent eavesdropping, connection hijacking, and other attacks.
- Key Use Cases: Secure remote login, command execution, and port forwarding.
- Operational Context: Essential for maintaining server integrity and managing infrastructure without exposing credentials or data in transit.
See also: SSH Fundamentals: Secure Remote Access and Encryption Explained