000 00274nam a2200109 4500
020 _a9781111308483
100 _aMICHAEL E. WHITMAN et AL
245 _aGUIDE TO FIREWALLS VPNs
250 _aTHIRD EDITION
260 _aUSA
_bCOURSE TECHNOLOGY GENAGE LEARNING
_c2012
942 _cBK
999 _c1943
_d1943