A control method implemented by a computer which is configured to be operated as a terminal apparatus, the control method comprising: transmitting (S2, S12), from the terminal apparatus to a first management server, a first request for transmission of a certificate of a first server, the first server being one of a plurality of servers, the first management server being configured to manage certificates for the plurality of servers; in response to the transmitting of the first request, receiving (S3, S13) the certificate of the first server from the first management server; in response to the receiving of the certificate, determining (S4, S14) a certificate authority by using information included in the received certificate, the certificate authority being a server from which the received certificate has been issued; transmitting (S5, S15), from the terminal apparatus to the determined certificate authority, a second request for transmission of first address information on the first server; in response to the transmitting of the second request, receiving the first address information on the first server from the determined certificate authority; transmitting a third request for transmission of second address information on the first server, from the terminal apparatus to a second management server, the second management server being configured to manage the second address information on the first server and corresponding identification information on the first server; in response to the transmitting of the third request, receiving the second address information on the first server transmitted from the second management server; in response to the first address information and the second address information, obtaining a determination result by determining whether the first address information on the first server transmitted from the determined certification authority and the second address information on the first server transmitted from the second management server agree with each other; and in response to the determination result (No in S24) indicating that the first address information and the second address information do not agree with each other, limiting access to the first server. transmitting (S2, S12), from the terminal apparatus to a first management server, a first request for transmission of a certificate of a first server, the first server being one of a plurality of servers, the first management server being configured to manage certificates for the plurality of servers; in response to the transmitting of the first request, receiving (S3, S13) the certificate of the first server from the first management server; in response to the receiving of the certificate, determining (S4, S14) a certificate authority by using information included in the received certificate, the certificate authority being a server from which the received certificate has been issued; transmitting (S5, S15), from the terminal apparatus to the determined certificate authority, a second request for transmission of first address information on the first server; in response to the transmitting of the second request, receiving the first address information on the first server from the determined certificate authority; transmitting a third request for transmission of second address information on the first server, from the terminal apparatus to a second management server, the second management server being configured to manage the second address information on the first server and corresponding identification information on the first server; in response to the transmitting of the third request, receiving the second address information on the first server transmitted from the second management server; in response to the first address information and the second address information, obtaining a determination result by determining whether the first address information on the first server transmitted from the determined certification authority and the second address information on the first server transmitted from the second management server agree with each other; and in response to the determination result (No in S24) indicating that the first address information and the second address information do not agree with each other, limiting access to the first server.