So I am working on something called node-press which is like wordpress but made in nodeJS. I am trying to connect to the database so I can force add things and test entries. I am trying to connect to this ip 18.104.22.168.
What port are you trying to connect on? c9 only supports ports 8080, 8081, and 8082, so make sure MongoDB is running on one of those and you are trying to connect on that port.