In addition, you need to include a discussion of security issues. Why this is important You can eliminate many networked systems vulnerabilities and prevent many security problems if you securely configure computers and networks before you deploy them. Vendors typically set computer defaults to maximize available functions, so you usually need to change defaults to meet your organization's security requirements. You are more likely to make decisions about configuring computers appropriately and consistently when you use a detailed, well-designed deployment plan. Developing such a plan will support you in making some of the hard trade-off decisions between usability and security.
Consistency is a key factor in security, because it fosters predictable behavior.
Refer to the practice, Keep operating systems and applications software up to date . How to do it Make the decisions described below and then record them. We assume that you are deploying workstations and servers in an existing infrastructure, which includes an existing network. The security issues related to the network architecture, including where you place servers and workstations on the network, are outside the scope of this practice. Identify the purpose of each computer.