By using the IP switch technique and designing filtration rules in the Internet firewall between different structure and site networks,safe transfer of the data of the Shanghai (3km) numerical prediction system is realized.

• 在异地、异构的复杂网络结构中,采用防火墙的地址转换技术和传输过滤技术,实现了上海3km数值预报系统的数据安全传输。