Your servers must be online and all services must be up and running 24x7x365. Ensuring high quality server support, server management & server security can never be overstated and should be your first priority as your servers are the backbone of your business. You should regularly update the server softwares, kernel, apply security updates and patches, Install and properly configure the firewall, malware scanner, rootkit scanner and antivirus to scan the server daily/weekly.