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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

Handing out the public IPs

With the topology subnet feature that OpenVPN offers, it becomes feasible to hand out public IP addresses to connecting clients. For this recipe, we will show how such a setup can be realized. We will re-use a technique from the Proxy-ARP recipe from Chapter 2Client-server IP-only Networks, to make the VPN clients appear as if they are a part of the remote network. If a dedicated IP address block is available for the VPN clients, then this is not required. The advantage of using the proxy-arp method is that it allows us to use only part of an expensive public IP address block.

Getting ready

For this recipe, the server computer was running CentOS 6 Linux and OpenVPN 2.3.12. The client computer was running Windows 7 64 bit and OpenVPN 2.3.11. Keep the client configuration file, basic-udp-client.ovpn, from the Using an ifconfig-pool block recipe from Chapter 2Client-Server IP-Only Networks.

To test this recipe, a public IP address block...

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