Su dung WiFi cong cong
Ket noi khong day (Wi-Fi) dang dan pho bien vi nhung tien loi cua no; ban se thay su hien dien cua chung khap noi tu cafe Internet, trong truong hoc cho den san bay, khach san... Voi thiet bi di dong tich hop card mang khong day (may tinh xach tay, dien thoai di dong, PDA, pocket PC...), ban de dang truy cap Internet voi vai thao tac don gian. Tuy nhien cac ket noi khong day thuong khong co che do bao mat, may tinh cua ban de tro thanh “muc tieu” cua nhung ke pha hoai. Vi vay, ban can thuc hien mot vai thao tac de dam bao an toan cho may tinh truoc khi “vi vu” tren mang. BAO VE MAY TINH CA NHAN - Su dung tuong lua. Tuong lua kiem soat du lieu ra vao may tinh va canh bao nhung hanh vi dang ngo; la cong cu bao ve may tinh chong lai su xam nhap may tinh bat hop phap khi ket noi voi moi truong ben ngoai. Mot so nguoi dung thuong tat tuong lua cua Windows de tranh “phien phuc”. Tuy nhien khi ket noi mang cong cong, ban nen kich hoat lai tinh nang nay. Thuc hien nhu sau: chon Start. Control Panel. Windows Firewall. tab General, danh dau tuy chon muc on (recommend) (hinh 1).
- Dat mat khau khi chia se tap tin, thu muc. Nguoi dung se duoc yeu cau dang nhap khi muon truy cap nhung tap tin, thu muc chia se. Neu su dung Vista, HDH se dieu chinh cac thiet lap bao mat dua tren loai ket noi mang cua ban. Chang han khi xac dinh dung mang cong cong, Vista tu dong tat che do chia se tap tin va may in de bao ve du lieu. THIET LAP KET NOI Truoc khi truy cap, ban can kiem tra trang thai hoat dong cua card mang; kich hoat no neu dang o che do disable. Chon Start. Connect To. Show all connections. Cua so Network Connections se liet ke cac dang ket noi mang cua may, nhan phai chuot tren Wireless Network Connection va chon Enable (hinh 2). De tien cho viec quan ly ket noi, nhan phai chuot tren Wireless Network Connection, chon Properties. Danh dau tuy chon vao muc “Show icon in notification area when connected”, nhan OK. Bieu tuong Wireless Network Connection se xuat hien o khay he thong.
Ghi chu: - Mot so MTXT cho phep tat/mo card mang truc tiep bang hoac thong qua phim tat, ban nen kiem tra hay doc tai lieu huong dan cua MTXT de co thong tin nay. - Neu khong co nhu cau ket noi mang, ban nen tat card mang de dam bao an toan va tiet kiem dien nang. Thuc hien cac thao tac nhu tren va chon Disable. Ke tiep, chung ta se xac dinh cac tram phat song de ket noi bang tien ich cua card mang hoac Wireless Network Connection cua Windows.
Tien ich cua card mang thuong duoc tich hop trong qua trinh cai dat trinh dieu khien card mang; neu khong, ban co the cai bo sung. Khoi chay tien ich card mang, chon Scan de quet cac ket noi mang hien huu. Dua vao mot so thong tin hien thi nhu ten mang, che do ma hoa, do nhay cua tin hieu, so kenh, tan so hoat dong, ban chi viec chon mang can ket noi va Active (hinh 3). May tinh se duoc cap IP tu dong, ban nhan duoc thong bao cho biet da ket noi thanh cong. Neu thuong xuyen ket noi voi mang nay, ban nen luu lai thong so cau hinh mang (profile) de khong phai thuc hien thao tac do tim cho cac lan ket noi sau.
De ket noi, nhan chuot phai tren bieu tuong Wireless Network Connection trong khay he thong, chon View Available Wireless Networks. Cac ket noi mang se xuat hien voi cac thong tin nhu ten mang, che do ma hoa (neu co). Neu khong tim thay, nhan Refresh Network List trong muc Network Tasks. Chon ket noi thich hop va Connect. Bieu tuong Wireless Network Connection o khay he thong se cho biet ket noi thanh cong hay khong (hinh 4). Ghi chu Trong thuc te, card mang Wi-Fi thuong chi tim duoc tram phat song co cung chuan. Truong hop song yeu, ket noi chap chon hoac khong ket noi duoc... ban co the thu mot trong nhung cach sau: - Di chuyen may tinh gan tram phat song hon, chon ten mang co cot song cao nhat (nhin tren muc Signal Strength). Tin hieu song cang manh cho toc do cang cao va on dinh. - Huong diem thu song (PC card) hay anten (anten USB neu co) ve phia tram phat song. - Doi chuan card mang Wi-Fi sao cho tuong thich. - Hoi thong tin tu quan tri mang.
(Theo PCWORLDVN) |
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Viet Bao
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