Shinichi Suzuki Yasushi Shinjo Toshio Hirotsu Kozo Itano Kazuhiko Kato Capability-based egress network access control by using DNS server. 1275-1282 2007 30 J. Network and Computer Applications 4 http://dx.doi.org/10.1016/j.jnca.2006.09.009 db/journals/jnca/jnca30.html#SuzukiSHIK07