求翻译：摘要：计算机网络安全即通过各种技术和管理措施，使网络系统正常运行，从而保证网络数据的安全性。建立网络安全保护措施的目的是确保经过网络传输的数据不会发生修改、丢失和泄露等。针对计算机网络安全存在的一些问题，本文从网络安全的重要性和防护措施等方面提出了一些见解，以增强网络安全防范意识。是什么意思？

Abstract: The computer network security through a variety of technical and management measures, so that the normal operation of the network system, thus ensuring the security of network data. Network security protection measures aimed at ensuring that the network transmission data is not modified, l

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Summary: through a variety of technical and management measures of computer network security, network systems up and running, so as to ensure the security of network data. Network security measures designed to ensure that network data is not modified, such as loss and exposure. Some problems for com