| 摘要 |
A system for preventing normal user from being in network address translation(nat)-based web service and a method for controlling the same are disclosed. The system discriminates between an attacker PC and a normal user PC that use the same public IP address in the NAT network, blocks a Web-page request generated from the attacker PC, processes a Web-page request of a normal user PC, and makes an Internet service of the normal user PC possible. The system discriminates between the attacker PC and the normal user PC that use the same IP address in the NAT network, blocks access of a packet of the attacker PC on the basis of the matching result obtained from a blacklist rule table, converts a Web-server host address into a virtual IP address upon receiving traffic of the normal user, allows the normal user traffic to access the Web server without any restriction caused by a blacklist rule table, such that the normal user can freely access the Web service of the Web server
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