How it works...

By default, the mongod daemon binds to all interfaces on TCP port 27017. By passing the IP address with the --bind_ip parameter, we instructed mongod daemon to listen only on this socket. Next we passed the --port parameter along with --bind_ip to instruct the mongod daemon to listen to a particular port and IP. Using a non-standard port is a common practice when one wishes to run multiple instances of mongod daemon (along with a different --dbpath) or wish to add a little touch security by obscurity. Either way, we will be using this practice in our later recipes to test shards and replica sets setups running on a single server.