求翻译：总之，网络安全是一个系统工程，不能仅仅依靠防火墙等单个的系统，而需要仔细考虑系统的安全需求，并将各种安全技术结合在一起，与科学的网络管理结合在一起，才能生成一个高效、通用、安全的网络系统是什么意思？

In short, network security is a systems engineering, and not rely solely on the firewall, such as a single system, the need to carefully consider the security needs of the system, and the variety of security technologies combined with network management and science combine to generate an efficient ,

In short, the network security is a systems engineering, and cannot simply rely on your firewall system, such as the single, and the system will need to be carefully taken into consideration, and the security needs of various security technologies together with the science, the network management, y

In brief, the network security is a systems engineering, cannot depend upon the firewall merely and so on the single system, but needs to consider carefully the system the security requirements, and each kind of safety work unify in together, with the science network management unifies in together,

All in all, network security is a systems engineering, and cannot rely solely on individual systems, such as a firewall, and the need to carefully consider the security requirements of the system, and a variety of security technologies work together, in conjunction with network of scientific managem

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