What is a VPN?
Acknowledgment:
Agenda
Virtual
Private
A VPN is also said to be “discrete” --
Virtual Private Network
VPN Motivations
VPN’s and the Protocol Stack
What does a VPN generally look like?
Network Layer VPN’s
Controlled Route Leaking
Network Address Translation (NAT) VPN’s
GRE Tunneling
GRE Tunneling (cont.)
L2TP Tunnels
PPTP Tunnels
Link Layer VPN’s
ATM & Frame: Discrete L3 Networks across a Common L2 Infrastructure
Transport and Application Layer VPN’s
Non-IP VPN’s
Summary
References:
Thank you. Questions?
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