00492cam a22001692  4500001001100000005001700011008004100028020001700069040001500086050002000101100003600121245006200157260003500219300001100254650005400265852000300319000001986620151217145921.0110301s         xx           000 0 eng d  a0137067925 :  aKABUcKABU 0aTK5105.59b.S631 aStallings, William.@000014822310aNetwork security esentials :bapplications and standards.  aDelhi :bPearson Educ.,c2011.  a431 p. 0aComputer networksxSecurity measures.@00001482241