然后深入研究了基于网络的安全扫描与基于主机的安全扫描两种技术，并分析了两种技术的对比，对两种技术中流行的安全扫描工具进行了研究。

Then, the security scan technologies based on host and network were further researched, and the contrast of these two technologies and then introduces the popular scanner were analyzed.

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主机 PaaS 自身可以固化为一个盒子（设备），带有单纯作为安全控制和客户端定制提交访问门户输出的基于 web 的管理控制台。

The hosting PaaS itself can be hardened as a box (appliance) with a web-based administration console exposed as solely an access portal for security control and client-side customization submissions.

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使用ssh的基于主机的认证和基于公钥的认证都比基于rsh rhost的认证安全。

Both host-based and public key-based authentication using SSH are more secure than RSH rhost-based authentication.

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