title: How can I use a LetsEncrypt SSL cert in my Heroku Node Express app?
body: <p>I have a Node Express app running on Heroku that I want to encrypt with a free-of-charge SSL cert from LetsEncrypt. However, the methods I've seen require opening up ports 443 and 80 to allow the ACME process to work. </p>
  
  <p>Heroku only gives you one port, and doesn't let you choose which port. So how can I use LetsEncrypt?</p>
  
  <p>I spent a bunch of time figuring this out yesterday. First time in a long time there were no answers on StackOverflow for something I was trying to do!</p>