Name: Mastering OpenVPN
Author: Eric F Crist Jan Just Keijser
ISBN: 9781783553143

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Mastering OpenVPN

Eric F Crist Jan Just Keijser

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Mastering OpenVPN
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Support files, eBooks, discount offers, and more
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Chapter 1. Introduction to OpenVPN
What is a VPN?
Types of VPNs
Comparison of VPNs
OpenVPN packages
OpenVPN internals
Summary
Chapter 2. Point-to-point Mode
Pros and cons of the key mode
TCP protocol and different ports
OpenVPN secret keys
Routing
The complete setup
Three-way routing
Bridged tap adapter on both ends
Combining point-to-point mode with certificates
Summary
Chapter 3. PKIs and Certificates
An overview of PKI
OpenVPN server certificates
OpenVPN client certificates
Other features
Multiple CAs and CRLs
Extra security – hardware tokens, smart cards, and PKCS#11
Summary
Chapter 4. Client/Server Mode with tun Devices
Understanding the client/server mode
Setting up the Public Key Infrastructure
Initial setup of the client/server mode
Adding extra security
Basic production-level configuration files
Routing and server-side routing
Redirecting the default gateway
Client-specific configuration – CCD files
Client-side routing
The OpenVPN status file
The OpenVPN management interface
Session key renegotiation
Using IPv6
Advanced configuration options
Summary
Chapter 5. Advanced Deployment Scenarios in tun Mode
Enabling file sharing over VPN
Using LDAP as a backend authentication mechanism
Filtering OpenVPN
Windows network locations – public versus private
Using OpenVPN with HTTP or SOCKS proxies
Summary
Chapter 6. Client/Server Mode with tap Devices
The basic setup
Enabling client-to-client traffic
Using the tap device (bridging)
Using an external DHCP server
Checking broadcast and non-IP traffic
Comparing tun mode to tap mode
Summary
Chapter 7. Scripting and Plugins
Scripting
Plugins
Summary
Chapter 8. Using OpenVPN on Mobile Devices and Home Routers
Using the OpenVPN for an Android app
Using the OpenVPN Connect app for Android
Using the OpenVPN Connect app for iOS
Integrating smart phones into an existing VPN setup
Using a home router as a VPN client
Using a home router as a VPN server
Summary
Chapter 9. Troubleshooting and Tuning
How to read the log files
Fixing common configuration mistakes
Troubleshooting routing issues
How to optimize performance by using ping and iperf
Analyzing OpenVPN traffic by using tcpdump
Summary
Chapter 10. Future Directions
Current strengths
Current weaknesses
Where we are going
Summary
Index

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Mastering OpenVPN