Mongodb - Enable Authentication

Basically it is very easy to do,

• 1. open mongodb shell
• 2. open admin db and add admin user (you need to have 1 user otherwise you can' lose access to your databases at all)

use admin
db.addUser("admin","12345")

• 3. Enable authentication auth=true (simply un-comment it) in config file 'sudo vi /etc/mongodb.conf', save changes and restart mongodb service

sudo service mongodb restart

For more information please read Security Practices and Management