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OpenVPN Cookbook - Second Edition by Jan Just Keijser

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Chapter 6. Troubleshooting OpenVPN - Configurations

In this chapter, we will cover the following recipes:

  • Cipher mismatches
  • TUN versus TAP mismatches
  • Compression mismatches
  • Key mismatches
  • Troubleshooting MTU and tun-mtu issues
  • Troubleshooting network connectivity
  • Troubleshooting client-config-dir issues
  • Troubleshooting multiple remote issues
  • Troubleshooting bridging issues
  • How to read the OpenVPN log files

Introduction

The topic of this chapter and the next is troubleshooting OpenVPN. This chapter will focus on troubleshooting OpenVPN misconfigurations, whereas the next chapter will focus on the all-too-common routing issues that occur when setting up a VPN.

The recipes in these chapters will therefore deal first with breaking things. We will then provide ...

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