Su dung WiFi cong cong

Tags: Wireless Network Connection, ket noi khong day, dien thoai di dong, may tinh xach tay, ket noi mang, Mang khong day, tram phat song, truy cap Internet, cong cong, su dung, che do, thuc hien, thong tin, an toan, Card


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

- Tat tai khoan Guest. De may tinh an toan hon, ban nen tat tai khoan Guest tranh nguoi dung dang nhap bang tai khoan nay. Trong Windows XP, chon Start. Settings. Control Panel. User Accounts. Guest. Turn off the guest account.

- 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).

Anh minh hoa
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.

Anh minh hoa

Hinh 2


















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.

Anh minh hoa

Hinh 3
















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.


Anh minh hoa

Hinh 4

Wireless Network Connection cua Windows khong co kha nang phat hien chuan cua tram phat song. Neu khong the ket noi, ban hay hoi thong tin tu nguoi quan tri de biet chuan dang su dung.

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.

Chon card mang khong day

Thi truong thiet bi mang khong day kha soi dong voi nhieu chuan khac nhau nhu 802.11a, 802.11b, 802.11g va nhung cong nghe moi nhu MIMO, Pre-N. Trong do, chuan 802.11g (toc do 54, 108, 125 hay 300Mbps... tuy theo hang va cong nghe tang toc) duoc nguoi dung ua thich do chi phi hop ly, ket noi on dinh va co the su dung voi hau het cac diem truy cap Wi-Fi cong cong. Ngoai thuong hieu san pham, ban nen chon mua cac san pham duoc chung nhan boi Hiep Hoi Wi-Fi (WFC) va tinh tien dung cua no, chang han PC card chi dung duoc voi MTXT con USB adaper co the dung cho ca may tinh de ban.










(Theo PCWORLDVN)

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Tìm hiểu: Wireless Network Connection, ket noi khong day, dien thoai di dong, may tinh xach tay, ket noi mang, Mang khong day, tram phat song, truy cap Internet, cong cong, su dung, che do, thuc hien, thong tin, an toan, Card

Xem Bản Tiếng Việt Có Dấu: Sử dụng Wi-Fi công cộng

Ban co the doc ban tieng Viet co dau cua bai viet Sử dụng Wi-Fi công cộng bang cach nhan chuot vao duong dan tren.

Lien he ve tin Su dung WiFi cong cong

Nhan xet, hay lien he ve tin Su dung WiFi cong cong co the gui bang duong dan o duoi. Ban nen gui kem tieu de bai viet Su dung WiFi cong cong de lam tham khao. Bai viet nay thuoc chuyen de Kinh nghiem trong chuyen muc Cong nghe.

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