Chapter 9. Troubleshooting and Tuning

Usually, it is quite easy to set up a VPN using OpenVPN. This is one of the most attractive features of OpenVPN compared to other VPN solutions. However, sometimes it is necessary to troubleshoot a non-working setup or to tune an existing setup to gain performance.

Troubleshooting and tuning OpenVPN are often overlooked topics. The OpenVPN log files on both client and server side provide a lot of information, but you have to know how to read them. There are also quite a few common mistakes to make when setting up the client and server configuration files. In this chapter, you will learn how to interpret the OpenVPN log files and how to detect and fix some of these common mistakes.

Finally, there is a large difference ...

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