A system and method are provided for validating a security service associated with packets communicated on a network. The system enables a network administrator to regulate usage of network services upon initiation of and throughout network sessions. The terminal base material 2 is defined by a cut surface of the thin plate through punching and comprises a lateral part 4 having at least one contact 6, planer parts 5 defined by front and back faces of a punched-out piece. There can be multiple levels of nesting.