Chapter 10. Advanced OpenVPN Configuration

In this chapter, we will deal with several examples of advanced OpenVPN configurations such as:

• Tunneling through a proxy server like squid

• Scripting OpenVPN—An overview

• Authentication methods

• Using a server configuration with specific per-client configurations pushed to clients based on their certificates

• Pushing routing commands to clients

• Pushing and setting the default route through a tunnel

• Protecting clients through a firewall behind the tunnel

• Distributed compilation through VPN tunnels with distcc

• Automatic installation for Windows clients

Because OpenVPN offers an abundance of possibilities, some aspects of these configurations can only be covered at a basic level (like squid proxy or LDAP authentication). However, there are hints and links to Internet sites containing detailed information about these setups.