Book Image

Troubleshooting OpenVPN

By : Eric F Crist
Book Image

Troubleshooting OpenVPN

By: Eric F Crist

Overview of this book

OpenVPN, the most widely used open source VPN package, allows you to create a secure network across systems, keeping your private data secure. Connectivity and other issues are a pain to deal with, especially if they are impacting your business. This book will help you resolve the issues faced by OpenVPN users and teach the techniques on how to troubleshoot it like a true expert. This book is a one stop solution for troubleshooting any issue related to OpenVPN. We will start by introducing you to troubleshooting techniques such as Packet Sniffing, Log Parsing, and OpenSSL. You will see how to overcome operating system specific errors. Later on, you will get to know about network and routing errors by exploring the concepts of IPv4 and IPv6 networking issues. You will discover how to overcome these issues to improve the performance of your OpenVPN deployment. By the end of the book, you will know the best practices, tips, and tricks to ensure the smooth running of your OpenVPN.
Table of Contents (16 chapters)

Chapter 9. External Problems

OpenVPN, by itself, can be a complex system, with given certificates, keys, configuration, scripts, hardware, and so on. The previous eight chapters of this book have touched on troubleshooting techniques and points on where to look within OpenVPN to address problems. However, once all the internal problems have been addressed, there are still several external influencers that can create additional hassles for your VPN.

Troubleshooting external factors for many things can be a difficult endeavor. In most cases, you'll be looking into a veritable black box for which you don't have a key. By setting up a VPN server, you are relying upon your Internet Service Provider (ISP) to allow transit for your VPN traffic on both the server and client side of the connection.