LOAD DISTRIBUTING SYSTEM BASED FIREWALL ON NETWORK

摘要

A firewall-based load distribution system at on a network is provided to manage a plurality of servers through a private IP to perform permitting and blocking functions of internal or external user access, thereby realizing a safe server through various policies. A plurality of servers(420,430,440) provides one or more service among web, E-mail, and a DNS(Domain Name System). A private IP(Internet Protocol) address is given to each of the web, the E-mail, and the DNS. A load distribution server(410) opens only a protocol and a port corresponding to a service requested according to a set firewall policy in the service request of an external client. The load distribution server changes a public IP address into the private IP address to connect the external client to a corresponding server.