User B User C User D Service A Service B Role 1 Role 2 Role 3 Host 1 Host 2 Host 3 Host 4 Read Write Read Only Owner IP Address Authentication A.A.A.A Service A Service B Role 1 Role 2 Role 3 Host 1 Host 2 Host 3 Host 4 Read Write Read Only Owner IP Address Authentication A.A.A.A Service A Service B Role 1 Role 2 Role 3 Host 1 Host 2 Host 3 Host 4 Read Write Read Only Owner IP Address Authentication A.A.A.A ΦʔΨχθʔγϣϯ 9 ΦʔΨχθʔγϣϯ : ΦʔΨχθʔγϣϯ ;