TRANSFER APPARATUS

A transfer apparatus comprises: a first storage unit configured to store a whitelist for storing reliable information indicating that communication between a source address and a destination address is authorized; a second storage unit configured to store an addition list including a specific address not included in the reliable information and a valid period of the specific address; a receiving unit configured to receive data; a check unit configured to check whether either a destination address or a source address included in data within the valid period is the specific address; and a generation unit configured to generate specific reliable information indicating that communication between the destination address and the source address included in the data is authorized and register the generated specific reliable information to the whitelist in a case where the check unit confirms within the valid period that either address is the specific address.