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AN TOAN - BAO MAT<br /> <br /> <br /> <br /> <br /> llllfilll IJP^IOTP<br /> <br /> <br /> <br /> <br /> viMMyui a a s r m ?>mtU'<br /> <br /> <br /> <br /> <br /> Giao tidp M2M (Machine to Machine) dang md ra che nay. Vi du, mdt sd ydu td thdng tin lien lac phuc<br /> mdt ttem nang rat Idn. Day la chu de dupc nhieu vu cho khd nang thoai. Mpt sd khac sir dung tudng<br /> ngudi quan tam va cfing la ndi dung chinh cua bai lira than thien vdi md hinh dien thoai nha. Mdt sd<br /> bao nay. khac da don gian hda cac phdn mem bdng each tao<br /> M2M la mdt thuat ngir diing md ta su giao tiep ra mdt md hinh ASP hoac luu trfl phdn mem. Mpt sd<br /> may tinh - may tinh, may ndi chung - con ngudi khac da dupc phan chia tren cac phan doan khac<br /> dd phuc vu doanh nghiep thdng qua viec quan ly nhau.<br /> tai sdn va thief bi nhdm hieu qua, tang doanh thu. ri9urf 1 Anatonry of a drop-in network<br /> M2M hita hen gia tri sir dung Idn trong tuong lai,<br /> nhung can cd mdt sd phan mdm img dung dd giam<br /> sat vdi ket ndi duoc xir ly tren dudng tmydn IP.<br /> Tuy nhien kha nang md rpng bi han che bdi nhu<br /> cdu hoac cung cap thiet bi thap, su dung kdt ndi<br /> khdng day de nang cao hieu qua sir dung, don gidn<br /> hda cac phdn mem img dung.<br /> Nhidu ngudi da tach cac ydu td: muc tieu, gidl<br /> phap phan manh cho mdi dja chi cua nhiing ban Hinh 1<br /> <br /> <br /> <br /> <br /> TAP CHI CNTT & TT KY 2 (2.2011) |l5<br />  AN TOAN - BAO MAT<br /> <br /> <br /> <br /> NHU'NG K H O K H A N khac nhau, mdi tmdng lap<br /> Tiep can cdc thief bj chay trinh va hieu bidt chi tidt ve<br /> day ludn la mdt su phiic tap, hanh vi cua thiet bi.<br /> gidl phap Midng day 0up Chi phi hieu qua: La tdng<br /> chung ta tranh dupc mdi lo chi phi de giam sat hoac<br /> ngai nay. qudn ly mdt thiet bi cd Uen<br /> Kt ndi end-to-end: Ban cd quan true tiep den gia tri cua<br /> the ket ndi khdng day tdi cac thief bi hoac hang hda.<br /> thiet bi khdng cd nghia la cac De ding, tien dung. Tray<br /> giao thuc, dia chi cd cac co nhap vao co sd dfl Ueu,<br /> chd cho phep tmyen thdng chuyen dfl lieu vao mpt hinh<br /> gifia cac thief bi va hoat dpng thirc hflu ich la chia khoa<br /> cac img dung can thief. cudi cung cua mdt giai phap<br /> Thieu su can thiep true hieu qud. Dich vu chuyen<br /> tiep eua eon ngudi: Khi su nghiep qui md vdn cd the<br /> dung mpt may tinh, neu gap lam viec cho mpt he thdng<br /> khd khan, ta sir dimg td hop phim Ctrl-Alt-Del. ERP mdi, nhung chung kha tdn kem va ngay cang<br /> Tuy nhien, quan ly thief bi tii xa tii mdt noi nao it tien dung hon nen cdn phdi luu trii tren may dich<br /> dd, tmyen thdng phdi duoc kich hoat va duy tri ma vu.<br /> khdng cd su can thiep cua con ngudi.<br /> "ROT MANG"<br /> Thiet bi thdng mmh va khdng thdng mmh: Thiet bi<br /> Hinh 1 md ta mdt nhdm thief bf. Cac thief bi nay<br /> thdng minh cd bd xu ly va rat nhieu bd nhd bd sung<br /> duoc ket ndi vdi mang PAN sir dung cdng nghe<br /> chirc nang lap trinh. Tuy nhien, cac thief bi thdng<br /> ZigBee, 802.15.4 hay da dang ki ban quyen. Day la<br /> minh thudng yeu cdu phan tich cac yeu td ddu vao<br /> <br /> <br /> <br /> <br /> V « TK*<br /> <br /> <br /> <br /> Mong Ga