| 摘要 |
An internal network security system and a method thereof are provided to realize the NAC technology by intercepting a user terminal who attempt to an internal network from the outside, connecting it to an authentication server group to perform the authentication for the terminal, and then transmitting a corresponding security policy to the terminal. User terminals(210,220) having a security policy execution program connect to an internal network from the outside. If the user terminal attempts an internal network connection, an enforcer(260) intercepts packets transmitted from the user terminal and then connects the user terminal to an authentication server group(280). The authentication server group authenticates the user terminal, and then sends at least one or more security policies to the user terminal. The user terminal accepting the security policies executes the security policies by driving the security policy execution program.
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