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OpenVPN Cookbook

You're reading from   OpenVPN Cookbook Get the most out of OpenVPN by exploring it's advanced features.

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Product type Paperback
Published in Feb 2017
Publisher
ISBN-13 9781786463128
Length 400 pages
Edition 2nd Edition
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Author (1):
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Jan Just Keijser Jan Just Keijser
Author Profile Icon Jan Just Keijser
Jan Just Keijser
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Table of Contents (11) Chapters Close

Preface 1. Point-to-Point Networks FREE CHAPTER 2. Client-server IP-only Networks 3. Client-server Ethernet-style Networks 4. PKI, Certificates, and OpenSSL 5. Scripting and Plugins 6. Troubleshooting OpenVPN - Configurations 7. Troubleshooting OpenVPN - Routing 8. Performance Tuning 9. OS Integration 10. Advanced Configuration

Using a learn-address script


This recipe will demonstrate how to set up a learn-address script that is executed on the server side when there is a change in the address of a connecting client. Learn-address scripts can be used to dynamically set up firewalling rules for specific clients or to adjust routing tables.

In this recipe, we will use a learn-address script to open up a firewall and to set up masquerading for a client. When the client disconnects, the firewall is closed again and the iptables masquerading rule is removed.

Getting ready

Install OpenVPN 2.3 or higher on two computers. Make sure that the computers are connected over a network. Set up the client and server certificates using the first recipe from Chapter 2Client-server IP-only Networks. For this recipe, the server computer was running Fedora 22 Linux and OpenVPN 2.3.10, and the client was running Windows 7 64 bit and OpenVPN 2.3.10. For the client, keep the client configuration file, basic-udp-client.ovpn, from the Using...

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