随着信息化在国防军事领域的广泛普及，信息与共享所带来的安全问题日益引起人们重视，而网络作为信息共享主要载体，非常容易受到破坏和攻击，因此网络安全也是非常重要的。介绍了信息战中网络安全与防范需要注意的几个方面，包括网络易受到的威胁、网络安全技术、标准以及网络维护问题等。 With the popularization of informationization in the field of national defense and military affairs, the security issues brought by information and sharing have drawn more and more attention. As the main carrier of information sharing, the network is very vulnerable to attacks and attacks. Therefore, network security is also very important. This paper introduces several aspects that need attention in network warfare and prevention in information warfare, including the threats to the network, network security technologies, standards and network maintenance.