# 电子工程代写|计算机及网络安全代写Computer and Network Security代考|CSCl430

## 电子工程代写|计算机及网络安全代写Computer and Network Security代考|Security Standards Based on Size/Implementation

If the network is small or it is a small organization such as a university, for example, security standards can be spelled out as either the organization’s security policy or its best practices on the security of the system, including the physical security of equipment, system software, and application software:

• Physical security: This emphasizes the need for security of computers running the Web servers and how these machines should be kept physically secured in a locked area. Standards are also needed for backup storage media such as tapes and removable disks.
• Operating systems: The emphasis here is on privileges and number of accounts, and security standards are set based on these. For example, the number of users with most privileged access like root in Unix or Administrator in NT should be kept to a minimum. Set standards for privileged users. Keep to a minimum the number of user accounts on the system. State the number of services offered to clients’ computers by the server, keeping them to a minimum. Set a standard for authentication such as user passwords and for applying security patches.
• System logs: Logs always contain sensitive information such as dates and times of user access. Logs containing sensitive information should be accessible only to authorized staff and should not be publicly accessible. Set a standard on who and when logs should be viewed and analyzed.
• Data security: Set a standard for dealing with files that contain sensitive data. For example, files containing sensitive data should be encrypted wherever possible using strong encryption or should be transferred as soon as possible and practical to a secured system not providing public services.

## 电子工程代写|计算机及网络安全代写Computer and Network Security代考|Security Best Practices

As you noticed from our discussion, there is a rich repertoire of standards security tools on the system and information security landscape because as technology evolves, the security situation becomes more complex, and it grows more so every day. With these changes, however, some trends and approaches to security remain the same. One of these constants is having a sound strategy of dealing with the changing security landscape. Developing such a security strategy involves keeping an eye on the reality of the changing technology scene and rapidly increasing security threats. To keep abreast of all these changes, security experts and security managers must know how and what to protect and what controls to put in place and at what time. It takes security management, planning, policy development, and the design of security procedures. It is important to remember and definitely understand that there is no procedure, policy, or technology, however much you like it and trust it, that will ever be $100 \%$, so it is important for a company preferably to have a designated security person, a security program officer, and chief security officer (CSO), under the chief information officer (CIO), and to be responsible for the security best practices. Here are some examples of best practices.

Commonly Accepted Security Practices and Regulations (CASPR) Developed by the CASPR Project, this effort aims to provide a set of best practices that can be universally applied to any organization regardless of industry, size or mission. Such best practices would, for example, come from the world’s experts in information security. CASPR distills the knowledge into a series of papers and publishes them so they are freely available on the Internet to everyone. The project covers a wide area, including operating system and system security, network and telecommunication security, access control and authentication, infosecurity management, infosecurity auditing and assessment, infosecurity logging and monitoring, application security, application and system development, and investigations and forensics. In order to distribute their papers freely, the founders of CASPR use the open source movement as a guide, and they release the papers under the GNU Free Document License to make sure they and any derivatives remain freely available.

## 电子工程代写|计算机及网络安全代写Computer and Network Security代考|Security Standards Based on Size/Implementation

• 物理安全：这强调了对运行 Web 服务器的计算机的安全性的需求，以及如何将这些计算机保持在锁定区域的物理安全。磁带和可移动磁盘等备份存储介质也需要标准。
• 操作系统：这里的重点是权限和帐户数量，并根据这些设置安全标准。例如，具有最高特权访问权限的用户数（如 Unix 中的 root 或 NT 中的管理员）应保持在最低限度。为特权用户设定标准。将系统上的用户帐户数量保持在最低限度。说明服务器向客户计算机提供的服务数量，尽量减少。为身份验证（例如用户密码）和应用安全补丁设置标准。
• 系统日志：日志始终包含敏感信息，例如用户访问的日期和时间。包含敏感信息的日志应仅供授权人员访问，不应公开访问。为应查看和分析日志的人员和时间设置标准。
• 数据安全：设定处理包含敏感数据的文件的标准。例如，包含敏感数据的文件应尽可能使用强加密进行加密，或者应尽快且切实可行地传输到不提供公共服务的安全系统。

## 电子工程代写|计算机及网络安全代写Computer and Network Security代考|Security Best Practices

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