Trong gia dinh ban, ban co mot so may tinh nhung van chua duoc noi mang. Ban muon chia se ket noi tap tin, chia se Internet, may in... Nhung ban khong biet phai bat dau tu dau? Ban nen chon giai phap mang nao vua don gian, hieu qua ma lai khong phai ban tam toi mot "dong" cac loai day? 
Mo hinh mang khong day cho gia dinh
Ban co the thiet ke cho minh mang khong day don gian, de chia se truy cap Internet, tap tin , may in... Ban co the luot Net trong khi ban dang trong san, hay ngoai vuon... De thiet lap mot mang may tinh khong day kha don gian, ban chi can thuc hien qua 4 buoc sau: - Lua chon thiet bi:
- Ket noi cac router khong day
- Thiet lap cau hinh router khong day
- ket noi cac may tinh
Doi voi nguoi su dung Windows XP, ban Windows XP SP2 cho phep thiet lap mang de dang hon, khong nhung the ban SP2 con giup ban chong lai hacker, sau, va nhung ke xam nhap mang khong day. Mo hinh mang khong day cho gia dinh Buoc 1: Lua chon thiet bi khong day Truoc het, ban can phai co cac thiet bi phat song khong day. Neu ban dang tim kiem cac san pham trong cac cua hang, hoac tren Internet, ban can chu y toi cac thiet bi ho tro 3 cong nghe khong day pho bien hien nay: 802.11a, 802.11b, 802.11g. Tuy nhien, chuan 802.11g duoc khuyen khich su dung boi no cho phep dem lai hieu nang cao nhat va tuong thich voi hau het cac san pham khac. Cac thiet bi can mua gom: - Ket noi Internet bang thong rong
- Router khong day
- Cac may tinh da tich hop cac thiet bi ket noi khong day, hoac ban phai mua them cac card mang khong day.
Router khong day Router chuyen doi cac tin hieu den tu ket noi Internet thanh cac ket noi khong day broadcast, tuong tu nhu tram phat song cua thiet bi dien thoai khong day. Ban cung chu y la phai mua router khong day, chu khong phai la cac diem truy cap khong day ( wireless access point). Cac card mang khong day Card mang khong day ket noi may tinh cua ban toi cac router khong day. Neu ban co laptop moi, rat co the may tinh cua ban da co san card mang khong day tich hop. Trong truong hop khac, ban can phai mua card mang khong day. Neu ban can mua card mang khong day cho may de ban, ban nen mua loai USB. Neu ban dang su dung may tinh xach tay, ban hay mua loai PC card. Chu y: De tao ket noi de dang, ban can chon card mang khong day cung voi hang san xuat router khong day. Vi du: Ban se thay router cua Linksys co gia tot, ban se chon luon card mang cua Linksys. De mua sam duoc de dang hon ban nen mua ca bo tu D-Link, Netgear, Linksys, Microsoft,..Neu ban su dung may tinh de ban thi ban phai chac chan la minh da co san cong USB. Neu khong co cong USB thi ban phai mua them card cam them cong USB. 
Cac cong cua Router khong day
Buoc 2. Ket noi toi router khong day Ban nen tam ngat ket noi vao Internet. Truoc het, can phai xac dinh ban dang su dung modem cap hoac DSL modem, roi rut phich cam dien ra (hoac tat nguon dien). Sau do, ban ket noi router khong day cua ban vao modem. Modem cua ban phai chac chan se lam viec tot (van truy cap duoc vao Internet). Sau do, khi moi thu da hoan thanh, may tinh cua ban se ket noi khong day toi router, va router se ket noi Internet qua modem. Sau day la buoc ket noi router toi modem: Chu y: Cac huong dan ben duoi duoc su dung cho router Linksys. Neu ban su dung loai modem khac thi ban hay doc ki tai lieu huong dan di kem voi thiet bi cua ban. Cac cong cua Router khong day - Neu ban dang co may tinh ket noi truc tiep vao modem: ban can phai bo dau cam cap mang dang sau may tinh cua ban, va cam no vao cong co nhan la Internet, WAN, hoac WLAN o dang sau router khong day cua ban.
- Neu ban khong co may tinh dang ket noi vao internet: Hay cam mot dau cam cap mang vao trong modem, va dau cap mang con lai thi ket noi vao cong Internet, WAN, hoac WLAN o trong router khong day.
- Neu ban co may tinh dang duoc ket noi toi router: Ban hay go bo dau ket noi mang o cong Internet, WAN, hoac WLAN trong router cu, va cam dau cam nay vao cong Internet, WAN, hoac WLAN cua router moi. Va sau do, dua tat ca cac dau cam cap mang tu cac cong cua router cu sang cong ket noi cua router moi. Ban se khong can router cu nua boi router moi se thay the cong viec.
Den tin hieu cong Internet Tiep do, sau khi da ket noi vat ly xong, ban hay bat modem cap hoac DSL modem cua ban. Doi vai phut de thiet bi co thoi gian ket noi Internet, va sau do ban hay mo router khong day len. Mot vai phut sau den o phan Internet, WAN, or WLAN o trong router khong day se sang, dieu do chung to ban da ket noi thanh cong. Buoc 3: Cau hinh router khong day Hay su dung mot cap mang di kem voi router khong day cua ban, ban can tam ket noi may tinh cua minh toi mot trong nhung cong con trong cua router khong day (bat cu cong nao ma khong co nhan Internet, WAN, hoac WLAN). Ban hay bat may cua minh, PC cua ban se tu dong ket noi vao router. Ban hay mo IE, va go dia chi IP de cau hinh router.Co the ban se phai go mat khau. Ten mat khau va dia chi se rat khac nhau, phu thuoc vao router ma ban mua, ban can xem huong dan trong tai lieu di kem. Bang duoi day la mot cau hinh cac dia chi, ten mat khau thuong duoc su dung mac dinh cua hang san xuat. | Router | Address | Username | Password | | 3Com | http://192.168.1.1 | admin | admin | | D-Link | http://192.168.0.1 | admin | | | Linksys | http://192.168.1.1 | admin | admin | | Microsoft Broadband | http://192.168.2.1 | admin | admin | | Netgear | http://192.168.0.1 | admin | password | IE se hien thi trang cau hinh router cua ban. Hau het cac cau hinh mac dinh deu tot, tuy nhien ban can chu y: - Ten mang khong day cua ban, thuong goi la SSID: Cai ten nay xac dinh mang cua ban. Do do, ban can phai dat ten khac va khong giong nhu cai ten ma hang xom cua ban dang su dung.
- Ma hoa khong day WEP, va bao ve truy cap khong day (WPA): se giup mang khong day cua ban bao mat hon. Hau het cac router, ban can cung cap vi ki tu de router cua ban tu sinh cac khoa. Ban hay go cac ki tu nay duy nhat dung lap lai ( ban cung khong can phai nho cac ki tu nay). Sau do ban hay ghi lai cac khoa ma router tu sinh.
- Mat khau quan tri, chia khoa cau hinh mang khong day: Cung giong nhu cac mat khau khac, mat khau cho router khong the la mot tu nao do trong tu dien, no can phai la su ket hop cac ki tu, so, bieu tuong. nhung cung rat quan trong la ban phai nho chung, boi ban se phai go mat khau khi dang nhap de cau hinh lai router.
Cac buoc cau hinh co the rat khac giua cac router, nhung bao gio trong moi lan thiet lap cau hinh cung la co cac muc nhu: Save Settings, Apply, va OK de luu lai cac thay doi cua ban.Bay gio, ban co the tat ket noi mang tu may ban dang dung de cau hinh. Buoc 4: Ket noi cac may tinh Neu may tinh cua ban khong tich hop card mang khong day, ban hay cam thiet bi ket noi mang khong day vao cong USB, va hay dua anten len vi tri cao nhat (dat len dinh cua case cua may tinh de ban), hoac ban cam card PC khong day vao khe cam (may tinh xach tay). Windows XP se tu dong nhan cac nhan card mang moi, va co the se yeu cau ban cai dat phan mem. Ban hay dua dia cai dat trinh dieu khien (driver) cho card mang khi co yeu cau. Man hinh huong dan cai dat se giup ban cai dat trinh dieu khien trong vong vai phut. Chu y: Cac buoc duoi day cung su dung Windows XP SP2. Neu ban su dung Windows XP ma chua co SP2 thi ban hay cai dat ban SP 2 tai http://www.microsoft.com/windowsxp/sp2/default.mspx.Windows XP se hien thi mot hop thoai thong bao da nhan duoc mang khong day. De ket noi vao mang khong day ban can lam theo cac buoc: - Nhan chuot phai vao bieu tuong mang khong day o goc duoi ben phai man hinh, va nhan chuot vao View Available Wireless Networks. Neu ban gap rac roi, hay tham khao tai lieu di kem card mang. Dung ngai lien he voi nha cung cap ve ki thuat neu ban gap kho khan.
- Cua so ket noi mang khong day se xuat hien va ban se thay mang khong day se xuat hien voi ten ma ban chon. Neu ban khong thay mang, hay nhan Refresh network list vao o tren cung ben trai. Ban hay nhan vao mang cua ban, va nhan vao nut Connect.
- Windows XP se dua ra loi nhac ban nhap khoa. Ban hay go khoa da duoc ma hoa ma ban da viet luc truoc trong ca hai truong Network key va Confirm network key, sau do nhan Connect.
Chu y: cua so Wireless Network Connection van tiep tuc hien ra Acquiring Network Address, co the la ban da go nham khoa ma hoa. Windows XP se hien thi qua trinh ket noi vao mang. Sau khi ban da ket vao mang, ban co the dong cua so Wireless Network Connection. Chuc mung ban, thiet lap mang khong day da thanh cong. Article source http://w4rum.com/213.t
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