Couchbase ports

I’ve installed Couchbase 3.0.1 on REHL5 server. My question is the message listing the ports that need to be open in the firewall. I only have one server that will be using CB, so I’m wondering what ports do I need at the minimum to be opened in the FW. My firewall team balked at opening so many ports, since many of them are considered to be ephemeral.