I had configured a S4B 2015 Front End and Edge Server and these have been working just fine.
I'm adding a Reverse Proxy into the fray and had a stupid question, just wanted to make sure my thinking on this is correct. I currently have my public IP for sip.domain.com, and the web conferencing and A/V Edge Service. I'm using a single IP for a small environment. These are all pointed at the Edge Server.
From what I understand you need a separate public IP address for the Reverse Proxy and in my public DNS these would be the domains pointed at the Reverse Proxy public IP address:
office.domain.com (office web apps)