Table of Contents
PPT Slide
Overview
“Internet” vs. "Intranet"
"Extranet"
Virtual Private Networks
Virtual Private Networks
VPN Applications
VPN Applications (cont.)
What Are We Really Worried About?
Tunneling vs. Encapsulation
Tunneling Scenario
Some Advantages of Tunneling
VPN Protocols
PPTP
RAS
Sidebar: MS-PPTP Security
CHAP
L2F
L2TP
GRE
IPsec
IPsec (cont.)
IP Authentication Header
IP ESP
IP ESP Modes
VPN Protocols Compared
VPN Protocols Compared (cont.)
A VPN Can Also Be...
Sample VPN Service
Some References
Summary
Questions? Comments? Queries?
Acronyms and Abbreviations
Acronyms and Abbreviations (cont.)
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Author: Gary Kessler
Email: kumquat@sover.net
Home Page: http://www.garykessler.net/library
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