CCNA Core Concepts - Chapter 24 (Part 1 of 3)

Chapter 24 of the CCNA Core Concepts curriculum. This video goes over virtual private networks (VPN), VPN benefits and drawbacks, site-to-site VPN, remote-access VPN, Secure Socket Layer (SSL) VPN, IPSec framework, IPSec protocol, encryption, authentication, Diffie-Helman (DH), Data Encryption Standard (DES), Triple DES (3DES), Advanced Encryption Standard (AES), Message Digest 5 (MD5), Secure Hash Algorithm 1 (SHA1), Authentication Header (AH), and Encapsulating Security Payload (ESP).