| 摘要 |
The present invention relates to a method for reducing the number of global IP addresses required for servers located in private networks. <??>In a typical environment the hosts and servers of an internal network access the Internet via a NAT Router. The configuration of the external address, external port, and external protocol code of an internal server as well as the internal address, internal port, and internal protocol code of the internal server on the NAT Router, and the establishment of a mapping table relating to the internal server according to the configured parameters, enables external hosts to access the internal server through the valid public IP address of the internal network and the port providing exterior services of the internal server. According to the present invention, WEB server and FTP server in the LAN can be easily provided without occupying too much valid IP addresses, thus, the present invention saves limited public IP addresses resource. Furthermore, the present invention implements port-level support to the internal server, and guarantees the security of network equipments. <IMAGE> |
