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)

Summary


This chapter touched on some of the most common tools used to identify and resolve configuration or network issues within the scope of OpenVPN. Some subjects, such as regular expressions, were identified; however, that may not be obviously useful to a novice administrator.

Some extremely powerful capabilities were also demonstrated with Wireshark's ability to decrypt SSL streams and tcpdump able to capture packets. Although these are most useful to an experienced network administrator, they can still be leveraged by a new or novice administrator. Having the ability to extract troubleshooting data is most critical when seeking help from others.