Implementing Virtual Private Networks

Implementing Virtual Private Networks

1. VPN Benefits

   • Cost Savings
   • Security
   • Compatibility
   • Scalability

2. VPN Types

   • Remote-access
   • site-to-site
   • complex VPN topologies
     • Multiprotocol Label Switching (MPLS) VPN
     • Dynamic Multipoint VPN (DMVPN)
     • Group Encrypted Transport VPN (GETVPN).

3. VPN Traffic

   • Hairpinning
   • Split Tunneling
   • Transport Mode
   • Tunnel Mode

4. IPSec

   • Confidentiality using encryption
   • Integrity using hashing algorithms
   • Authentication using Internet Key Exchange (IKE)
   • Secure key exchange using the Diffie-Hellman (DH) algorithm

5. IPsec Framework

   • IPSec Protocol
     • AH
     • ESP
     • ESP+ AH
   • Confidentiality
     • DES
     • 3DES
     • AES
     • SEAL
   • Integrity
     • MD5
     • SHA
   • Authentication
     • PSK
     • RSA
   • Diffie Hellman (Secure Key Exchange)
     • DH1
     • DH2
     • DH5
     • DH...

6. IKE Exchange

   • Local Peer
   • Remote Peer
   • Phase 1
   • Phase 2