Dynamic data input method for VPDN (Virtual Private Dial-up Network)

The invention relates to a dynamic data input method, especially to a dynamic data input method for the VPDN. A dynamic data input device for the VPDN is connected to an original link in series, an external server generates different data packages according to different rules, and returns the data packets to the device via a returning port, the device inquires whether a stream to which the data packets belong exists via a classified matching unit, a forwarding port of the data packets is configured as an inquired port, the dynamic data packets are sent to the original link via the forwarding port, and thus, dynamic data injection for the VPDN is realized. 本发明涉及动态数据注入的方法，尤其是种用于虚拟专用拨号网中动态数据注入的方法。将用于虚拟专用拨号网中动态数据注入的装置串接在原始链路中，外接服务器，该外接服务器根据不同的规则产生不同的数据包，并将所述数据包通过回传口发回该装置中，该装置通过分类匹配单元查询上述数据包所属的流是否存在，然后置上述数据包的转发端口为查询到的端口，最后根据转发端口将上述动态数据包发送至原始链路中，实现面向虚拟专用拨号网的动态数据注入。