Objective: For constructing WeChat hospital service platform, the data interaction with Hospital Information System is essential. However, along with which comes the potential security threats for the hospital' s intranet. Methods: After a series of analysis, this paper proposes the method based on the application of VPN, Firewall and GAP technology. Result & Conclusion: Implements isolation between the WeChat Hospital service platform and the Hospital Information System, and enhances the security of the hospital' s network.%目的：保证医院内部网络安全的同时，实现微信就诊服务平台与医院内部的信息系统进行数据交互。方法：应用VPN、防火墙和网闸技术，实现了微信就诊服务平台与医院信息系统的数据安全通信以及内外网的安全隔离。结果与结论：通过部署VPN、防火墙和网闸设备，可以消除内外网互联对内部网络环境中潜在的安全威胁。实施一套切实可行的安全解决方案，能够有效解决医院内部网络和外部网络之间数据交互的安全问题，从而加强医院内网的安全保障水平。
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