All web applications such as Web servers, News servers, email servers etc. need to be configured as secure as possible. This can be achieved by
Enable server and application logs: The logs provide an opportunity to look into the activity on the server over the past few hours or days. Check for any unusual activity such as failed login attempts etc.
Example: You are administering a web server that is hosting an e-commerce web site for your company. The manufacturer of the web server has released a new patch that plugs some critical security loopholes. What needs to be done?
Solution: It is wise to implement software updates on a web server located in the lab, and then implement the same on production web server. It is also important to take a backup of the web server before implementing any software updates. In the event that anything goes wrong during the update, you can always restore the systems back to its previous state using the backup.