por Siyan, Karanjit, 1954- [autor] | Siyan, Karanjit, 1954-. Internet firewalls and network security | Hare, R. Chris, 1962- [autor] | Mena, Jorge Iván [traductor] | Siyan, Karanjit, 1954-. Internet firewalls and network security.
por Pike, Mary Ann, 1958- [colaborador] | Díaz Mena, Jorge Ivan [traductor].
por Eager, William, 1957- [autor] | Díaz Mena, Jorge Ivan [traductor].