Skip to content

Network Security Protocols

Protects data during transmission and prevent unauthorized access. They mainly use encryption, authentication and integrity checks to secure communication across networks.

SSL (Secure Socket Layer)

  • Security protocol used to encrypt communication over the Internet.
  • Protects sensitive data from interception and unauthorized access.
  • Supports both client–server and server–server communication.
  • Forms the basis of secure web communication.
  • No fixed port (commonly used with 443 via HTTPS).

HTTPS (Hypertext Transfer Protocol Secure)

  • Secure version of HTTP used for encrypted web communication.
  • Uses SSL/TLS to encrypt data between browser and server.
  • Protects data from interception and tampering.
  • Identified by the padlock icon in browsers.
  • Port: 443 (TCP)

TLS (Transport Layer Security)

  • Security protocol providing encryption, authentication, and data integrity.
  • Successor and improved version of SSL.
  • Widely used in web applications, email, and VoIP.
  • Ensures secure communication over networks.
  • Port: No fixed port (commonly used with 443, 993, 995).
✔ Learning Tip

Break complex topics into smaller parts. Learn one concept at a time instead of trying to master everything at once.