000			00469nam a2200133Ia 4500
008			241212s9999 xx 000 0 und d
020			_a8178083078
082			_a005.8 _bS67N
100			_aStallings, William
245		0	_aNetwork security essentials _bapplications and standards _cWilliam Stallings.
260			_aDelhi _bPearson education _c2003
300			_axiii, 366p.: ill.; 26cm.
650			_aData protection _bComputer security _cComputer networks - Security measures.
999			_c42553 _d42553