Linux Security ChecklistA reliable server is only as good as it is maintained and due processes applied. A systems security checklist template for Centos 6 mentioned below serves to meet the basic security requirements. A more stringent and targeted checklist can be developed further.
This mainly records existing system details and follow common practices. Some stuff like SELinux is mentioned as permissive as this is what I have at the moment. Details should be updated to specific server needs. Another useful checklist is for web application deployment and can be found at http://tboxmy.blogspot.my/2011/06/linux-security-checklist_14.html.
Section A. Details of the system
Section B. Services
Section C. Essential files
Section D. Examples.