In this chapter, we will focus on some of the new features found in OpenVPN 2.1 and the upcoming 2.2 release. Many recipes from the previous chapters already made use of OpenVPN 2.1-specific features (such as topology subnet), but a few other features introduced in OpenVPN 2.1 are less well known. The recipes in this chapter will cover some of these, such as the use of inline certificates, connection blocks, and port-sharing.

The upcoming 2.2 release of OpenVPN is mainly a bug-fix release, though a few new directives were introduced. In the last recipe of this chapter, we will focus on one of them.