Quan Ly Ket Noi Va Tinh Phi Wifi - Smith.N Studio

7/29/2019 Quan Ly Ket Noi Va Tinh Phi Wifi - Smith.N Studio

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Chuyn trang dnh cho k thut vin tin hcCHIA S - KINH NGHIM - HC TP - TH T HUT

Qun l kt ni v tnh ph truy cp Wi-Fi

Ngy nay vic truy cp Internet khng dy (Wi-Fi) tr nn kh ph bin. Bc vo mt qun cafe, nh hng, khch sn hay thm ch ti cctrng i hc, th vin, vi laptop trong tay bn c th vi vu duyt web, tr chuyn vi bn b, nghe nhc trc tuyn Vi lng ngi truy cpng s l c hi tt nh qun tr qung b thng tin, hnh nh ca mnh. Tuy nhin, vic qu nhiu ngi truy cp min ph s gy ra hintng tc nghn mng. V iu thc y cc nh qun tr tm k im gii php c th qun l bng thng, xc lp thi gian truy cp theotng i tng, qun l ti khon ngi dng v c kh nng tnh ph truy cp theo nhu cu s dng.

Trc y, ti cc qun cafe, nh hng, khch sn, nh qun tr thng lp t router tch hp Wi-Fi hay access point (AP) cho php khch hngtruy cp min ph. Nhng v vng ph sng ca cc thit b ny kh rng, nn i khi nhng ngi dng bn ngoi - khng phi khch hng - cngc th bt sng v dng k hay thm ch khch vo qun cafe ngi qu lu ch truy cp Wi-Fi... Nhiu nh qun tr ngh n cc gii phpm ha truy cp dng WEP/WPA/WPA2 hoc xc lp quyn truy cp theo a ch MAC, a ch IP... Song nhng gii php ny gy nhiu phin toicho khch hng cng nh nh qun tr.

Bi vit ny gii thiu mt s gii php hotspot gateway (gi tt hotspot), gip nh qun tr qun l kt ni truy cp khng dy theo thi gian, kimsot bng thng theo ngi dng v c th tnh ph truy cp theo nhu cu s dng.

Cng hay mm

Hotspot c 2 dng: phn mm hoc phn cng. Hostpot phn mm c cc tnh nng nh phn hn mc bng thng cho ngi dng, kim sot truycp theo thi gian v c th tnh ph truy cp theo ti khon; c bit n khng i hi phi ci t phn mm cho my khch (client) nh cc ccphn mm qun l phng net hay Internet cafe khc. Hotspot phn cng ngoi cc tnh nng nh phn mm, n cn l mt AP. Ngi dng trckhi truy cp Internet (c dy hoc khng dy) u phi ng nhp bng ti khon (username, password) do nh qun tr cung cp. Vi hotspot nhqun tr c th ty bin trang ng nhp km thng tin qung b ca mnh. Vic in ha n tnh cc n gin, bn c th trang b my chuyn

dng in ha n hoc my in dng trong vn phng. Ty theo loi my in, bn c th kt ni trc tip vo h thng mng (my in mng), gn vomy tnh. mt s hostpot phn cng c h tr cng giao tip vi my in chuyn dng in ha n.

Trn th trng hin nay c kh nhiu sn phm hotspot phn mm, phn cng. V phn mm, c cc sn phm nh Antamedia(http://www.antamedia.com), Control AP (http://www.controlap.com) s dng c y tnh nng, bn cn mua bn quyn. V phn cngc cc sn phm nh BroWan P-560 plus, Planet WSG-404 c im c bn nhn bit hotspot phn cng so vi cc thit b AP khc l chngc tch hp sn c ch xc thc AAA (authentication, authorization, accounting) v h thng tnh cc truy cp.

Trong khun kh bi vit ny, chng ti s gii thiu, minh ha gii php hotspot qua hai sn phm i din m chng ti tng tri nghim lphn mm Antamedia Hotspot v phn cng BroWan P-560 plus.

Hin thc bng phn mm

Hnh 1: Tng quan m hnh kt ni hotspot phn mm .

Hu ht cc hotspot phn mm u yu cu ci t trn my tnh c 2 card mng (my tnh hotspot). Tt c my tnh c dy, khng dy khi truycp Internet u phi thng qua my tnh hotspot ny. Ti y, my tnh hotspot s kim sot, qun l ton b qu trnh truy cp ca ngi dng.

Chng hn, chng ti th nghim ci t Antamedia Hotspot trn mt my tnh chy h iu hnh Windows XP c 2 card mng (NIC). NIC 1dng kt ni ra Internet v NIC 2 ni vi mng ni b. cc my tnh bn trong mng c th ra c Internet th my tnh hotspot cn phi chia

s kt ni Internet. Vic chia s ny c nhiu cch nhng nu bn dng h iu hnh Windows th cch n gin nht l dng ICS (InternetConnection Sharing) chng trnh c sn trn Windows. bt tnh nng ICS, bn nhn phi chut ln NIC 1 chn Properties > Advanced, trongphn Internet Connection Sharing, nh du chn Allow other network users to connect through this computers Internet connection s xut hinmt bng thng bo, bn hy chn Yes. Lc ny my tnh hotspot s cp a ch IP ng trong dy t 192.168.0.1 192.168.0.254 cho cc mytnh trong mng (my tnh trong mng cn tt tnh nng tng la). NIC 2 s nhn a ch IP ng c cp pht l 192.168.0.1. Sau khi cuhnh ICS, bn tin hnh ci t, chy v xc lp cc thng s cho phn mm.

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Hnh 2: Phn mm c giao din trc quan v nhiu tnh nng.

Antamedia tng thch tt vi hu ht cc phn cng (router, switch mng, AP), giao din trc quan, cho php ci t t ng (Wizard).

Chng trnh gip bn qun l chi tit ngi dng nh: p hn mc bng thng, gii hn thi gian s dng, kim sot, tnh cc truy cp v cnrt nhiu tnh nng khc ch bn khm ph.

Ngoi ra, bn c th ty bin, thay i trang ng nhp a cc thng tin qung b n ngi truy cp - iu ny hu ch mi ngi nh nbn nhiu hn.

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Hnh 3: p hn mc bng thng, thi gian s dng cho ngi truy cp.

S dng phn mm i hi my tnh phi hot ng lin tc; hiu sut hot ng v bng thng mng ph thuc nhiu vo n nh ca h iuhnh, card mng trn my tnh hotspot. AP v router cng l nhng thnh t gp phn khng nh trong vic m bo tc truy cp mng. Ngoira, bn cn mua bn quyn phn mm c c y tnh nng cng nh s dng di lu.

Gii php phn cng

Trong khi , hotspot phn cng thng l s hp nht ca nhiu tnh nng nh: router, AP, c ch iu khin truy cp, qun l ngi dng, kim

sot bng thng v tnh cc truy cp.

Hnh 4: Tng quan m hnh kt ni hotspot phn cng

Vic thit lp, cu hnh phn cng hotspot kh n gin v tng t nh cc thit b router, AP khc. Ngoi ra, mt s hotspot phn cng, chnghn BroWan P560 plus, cho php ngi qun tr c th to cng lc 16 mng khc nhau (SSID tn mng) vi cc ch m ha ring (WEP,WPA, WPA2). Bn c th ty bin mc an ton thng tin i vi tng i tng truy cp.

Hotspot phn cng cng c kh nng qun l chi tit ngi truy cp, gii hn bng thng theo tng nhm i tng v tnh cc truy cp theo nhucu s dng nh hotspot phn mm.

Hu ht hotspot phn cng l s hp nht tt c trong mt, v vy hiu sut hot ng ca mng, tc truy cp ca my tnh ph thuc honton vo n nh ca thit b.

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Hnh 5: Mt s hotspot phn cng cho php to cng lc nhiu SSID vi cc ch m ha khc nhau

Ngoi ra, mt s hotspot phn cng ch h tr chun 802.11b/g, nu bn mun nng cp ln chun mi 802.11n cn thay th thit b hotspot phncng khc hoc b sung AP chun 802.11n (lc ny AP chun 802.11n b sung tr thnh im truy cp khng dy kt ni dy mng trc tip vihotspot phn cng chun 802.11b/g. t tc ca chun 802.11n 450Mbps, bn cn tt chc nng AP trn hotspot phn cng chun

802.11b/g v cc my khch Wi-Fi phi h tr 802.11n).

Hnh 6: Gii hn bng thng theo nhm

trin khai gii php hotspot h tr qun l bng thng, kim sot truy cp v tnh cc, nh qun tr c th la chn nhiu gii php phn cnghoc phn mm. Phn mm thng thng s c giao din trc quan v nhiu tnh nng hn so vi phn cng. Vi phn mm, bn cn trang b thmAP, my tnh hotspot v mua bn quyn s dng. Phn cng th gn nh v vic lp t, cu hnh n gin hn. Tuy nhin, n nh ca c phncng v phn mm u l nhn t quyt nh hiu sut hot ng, bng thng v tc truy cp mng (khng xt n yu t ng truyn).

Quc Dng (PCWorld)

Cng ty TNHH u t pht trin tin hc GC Co m

Chuyn trang k thut my vi tnh cho k thut vin tin hcin thoi: (073) - 3.511.37 3 - 6.274.294

Website: http://www.gccom.net

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Quan Ly Ket Noi Va Tinh Phi Wifi - Smith.N Studio