00646pamaa2200217 4500 0000027996 20140922090000.0 1565928717 005.82 ZWI TK5105.59 ZWI 2000 ZWICKY Building internet firewalls Elizabeth D. Zwicky, Simon Cooper and D. Brent Chapman. 2nd ed. Beijing: O'Reilly, 2000. xxi, 869p.: ill.; 26cm. BIT BSE Computer networks -- Security measures Internet (Computer network) -- Security measures Cooper, Simon Chapman, D. Brent