Patent ID: 7434255

Claim:
An encryption error monitoring system for checking packets transmitted between a private network and an external network, said system comprising: a detector module configured to be connected to receive said packet for determining whether or not said packet is successfully encrypted in accordance with a specific security protocol, said detector module being configured to read from said packet a sender's address and a destination address, and to provide an error signal when said packet is judged not to be successfully encrypted, a manager module which is configured to be connected to said detector module within said private network, and to create, upon receipt of said error signal, a report including said sender's address and said destination address with regard to the packet determined not to be successfully encrypted, said detector module including a judge means configured to read a header included in said packet and checks whether or not said header includes a protocol code that matches with a particular code identifying said specific security protocol, said judge means providing said error signal when said header does not include the protocol code that matches with said particular code, wherein said manager module is configured to set a condition for determining whether or not the packet is to be encrypted, and transmits said condition to said detector module; said detector module including a packet filter configured to filter out the packet designated to be encrypted in accordance with said condition, such that said judge means processes said packet designated to be encrypted.