In the last part I briefly mentioned load balancers and proxies. After thinking about it for a while, I realized I see no reason not to run one, since it simplifies things a bit when setting up secure web services. In this part, we will be setting up a HAProxy server which won’t actually load balance anything, but which will act as a kind of extensible gatekeeper for our web services. In addition, the HAProxy instance will act as the TLS termination point for secure traffic between clients on the Internet and services hosted on our server(s).
This article is written from the perspective of running HAProxy on a separate virtual machine. That’s just for my own convenience, though. If you’re running pfSense for a firewall, you already have HAProxy as a module. It is also possible to run HAProxy directly on your web server, just logically putting it in front of whatever web server software you’re running.
Let’s get started. This post will be a rather long one.