Thit Lp Mng Wifi Chia S Lan V Internet Khng Cn Acsess Point Tnh hung l hai my tnh mun chia s file v internet vi nhau cn trung hp ch chia s file khng thi th s ni phn sau. Trc ht cng nn gii thiu qua v cng ngh ang rt ph bin ny ch nh: WiFi hay Wireless Fidelity uc m ch nh l cng ngh Lan khng dy uc pht trin da trn chun IEEE 802.11a/b/g .( Bluetooth th hi khc nha, n s dng tn s radio thp hn WIFI v da trn chun IEEE 802.15.1). Mng Lan khng dy l la chn ca bn nu: - Bn mun di chuyn n bt c u trong nh bn vi chic laptop thn yu m vn kt ni uc lan v net ( vd; nh tui m my PPC vo WC chat n ) - Bn khng mun thm bt c dy d lng nhng i lng vng trong nh bn ( c bit l khi nh bn c nhiu my). to mt mng khng dy nh, ph bin nh l dung mt WIFI access point. Mt access point ng vai tr nh l mt ci Hub hoc switch nh trong mt mng Lan c dy im kt ni trung tm - kt ni cc thit b my tnh (pocket pc, laptop,desktop) vi nhau hoc kt ni mng khng dy vi mng c dy hay kt ni vi Intnt.

y l hnh minh ha mng WIFI vi access point. Hin gi ph bin loi router kim access point vi 4 cng LAN ( nh Linksys W.. tm 70$ th phi) Mt khc, mt mng khng dy trong my tnh lin kt trc tip vi nhau khng thng qua Access point uc gi l Ad-hoc network.

Mng WiFI khng cn Access point V gi mi l vn chnh ca chng ta l to mt mng Lan Ad hoc chia s file v kt ni Internet gia cc my tnh trong nh : Truc tin bn phi chun b truc; - Kim tra xem chun ca card WIFI: card chun a ch chi vi chun a,cn card chun b th chi uc c b ln g ( lu card chun b ch h tr n 11Mbps cn chun g l 54 Mbps) - Gn card v mi my v ci driver ( trung hp nu bn cha lm) - Xc inh mc bo mt cho mng : ko m ha, WEP hoc WPA. ( Lu bn ch c th dung WPA nu c 2 card h tr n) - t my ca bn trong phm vi song. Thng thong l 50 mt trong nh. c them ti liu i km card ca bn bit chi tit. - sng oc truyn tt nht, bn nn trnh t my gn nhng vt chn kim loi hoc nhng ngun gy nhiu nh l vi sng, nhng thit b Bluetooth ang hot ng, in thoi m bng con - Bn phi chc chn rng c hai card WIFI phi h tr ch ad hoc v Windows XP Wireless Zero Configuration ( WZC) service. Nu WZC khng uc h tr th bn phi dung chong trnh i cng vi card ca bn to mng ad-hoc. - cho php chia s file bn phi t tn duy nht cho mi my v t chung cng work group. lm iu ny bn click chut phi vo My computer icon, chn Properties ri i n System Properties. Trn Computer name tab, click Change. Sau restart my nha. I. Ci t mng Adhoc trn my tnh th nht: 1. i n Control Panel v m Network Connection folder. Nu bn nht card wifi v ci driver cho n, bn phi tm biu tung Wireless Network Connection dui Lan or High-Speed Internet Connection

2. Click phi chut vo Wireless Network Connection v chn Properties m ra ca s Wireless Network Connection Properties. 3. tab Wireless Networks ca ca s Wireless Network Connection Properties. , chn Add dui Preferred networks. Lu tab Wireless Network ch xut hin nu card bn h tr Windows XP Wireless Zero Configuration ( WZC) service

4. Trn tab Association g bt k tn mng ad-hoc trong Network name (SSID)

5. Chn "This is a computer-to-computer (ad hoc) network" v xa "The key is provided for me automatically" nu bn mun t network key mt cch th cng. 6. Trong mc Network Authentication chn Open hoc Share hoch WPA-None. Trong mng c access point ta c thm la chn WPA-PSK v WPA. Trong win XP SP1 bn ch c th tm thy Open hoc Shared, tr khi l bn ci thm bn update cho WPA

7. Trong Data encryption chn ch bo mt thch hp vi bn. Nu bn chn Open hoc Shared trong Network Authentication bn s tm thy Disabled and WEP in Data encryption. Chn WEP nu bn mun d liu c m ha khi truyn thch hp vi mng nh v gia nh. Nu chn WPA-None in Network Authentication, bn s thy TKIP and AES trong Data encryption. C hai ci ny u l mc m ha manh nht

8. Trong Network key g cha kha bo mt v dng ASCII hoc k t hexadecimal.. K t ASCII c th cha ch ci, s hoc biu tung trong khi hexa ch cha s t 0-9 v ch t A n F. Lu : nu bn chn ch bo mt WEP, cha kha s phi l 5 k t ASCII hoc 10 k t hexa cho mc bo mt 64 bit v 13 ASCII hoc 26 hexa cho mc bo mt 128 bt. Vd: 12345 ( 5 k t ASCII) hoc ABC123EF45 ( 10 k t hexa) cho mc m ha 64 bt. 9. Trong Confirm network key g li cha kha 10. Click OK trong ca s Wireless network properties lu li thay i. 11. Click OK trong ca s Wireless Network Connection properties lu li nhng thay i.

II. Ci t mng Ad-hoc trn my th 2: 1. M Network Connections folder. 2. Tm Wireless Network Connection icon and chn "View Available Wireless Networks".

3. Ca s Wireless Network Connection s ch ra danh sch cc mng khng dy uc tm thy trong phm vi ph sng

4. Chn tn mng va to v n CONECT. 5. G CHA KHA nh trn my 1 khi mt thong bo hin ra v chn Connect. Nu bn khng chn "The key is provided for me automatically" trong phn setup my 1 th hy trng phn network key v n Connect.

By gi mng WI-FI adhoc gia hai my uc kt ni:

CHIA S KT NI INTERNET: Trn my kt ni trc tip vi Internet 1. M th mc Network Connections . 2. Tm kt ni Internet bn mun chia s. Click chut phi ln kt ni v chn Properties.

3. Trong tab Advanced , chn"Allow other network users to connect through this computer's Internet connection" v chn "Wireless Network Connection" t hp th xung.

4. Sau bm vo Setting. 5. Tch chn cc dch v cn thit. nh DHCP, DNS.... 6. Bm OK, sau my s thng bo l i a ch IP ca Wireness thnh 192.168.0.1 c mc nh. 7. Trong phn IP ca card wifi my kia ng 8. Chn repair wireless connection hai my nhn li nhau. By gi bn kt thc qu trnh to mng WIFI adhoc v thit lp chia s Internet cho 2 my. truy cp ti nguyn my khc bn phi thit lp network sharing cho tng ti nguyn.

Trung hp ch chia s file gia 2 my khng thi th bn t IP tnh cho c hai WIFI conection c hai my, khng uc t IP trng nhau nha Vd : My 1: IP : 192.168.0.1 Subnet Mask : 255.255.255.0 My 2:IP: 192.168.0.2 Subnet Mask : 255.255.255.0 Ri bt tt li WIfi cho 2 my nhn li nhau.