Porter, Thomas PhD creator Gough, Michael 1963- text mau Rockland, MA Syngress c2007 2007 monographic eng

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xx, 412 p. : ill. ; 24 cm. Thomas Porter, Michael Gough. Includes index. Internet telephony Security measures Computer networks Security measures TK5105.8865 .P67 2007 004.69 9781597491693 1597491691 2007298838 http://www.loc.gov/catdir/enhancements/fy0742/2007298838-d.html http://www.loc.gov/catdir/enhancements/fy0742/2007298838-d.html CUK 070820 20210311151232.0 021122