An information processing apparatus, including a storage device a security list, wherein a security level of each of communication protocols installed in a network is listed, a status management list, which describes validity of each communication protocol, and a protocol setting system, which sets validity of each communication protocol, is provided. The protocol setting system includes a status detecting unit, which refers to the status management list and detects validity of each communication protocol, an unsecured protocol detecting unit, which refers to the security list when at least one of the communication protocols is validated and detects a communication protocol with a security level being lower than the validated communication protocol, and a status updating unit, which invalidates the communication protocol detected by the unsecured protocol detecting unit to have the lower security level and detected to be valid by the status detecting unit.