虽然校园网为互动交流的便捷、教学资源的丰富、教学空间的延伸、管理水平的提升创造了良好的平台和机会,但频出的网络安全事故促使校园网络安全问题备受关注,其中防火墙作为连接校园内网和外网的唯一出入口,在维护校园网络安全工作中起着关键性作用。对此,本文从防火墙技术的内涵出发,分析了其在校园网中的运用情况,并提出了安全有效的运用策略。 Although the campus network provides a good platform and opportunity for the convenience of interaction and exchange, the enrichment of teaching resources, the extension of teaching space and the improvement of management level, frequent network security incidents have drawn much attention on campus network security issues. Among them, The only gateway connecting campus intranets and extranets is playing a key role in maintaining campus cyber security. In this regard, this article from the connotation of firewall technology, analysis of its use in the campus network, and put forward a safe and effective use of the strategy.