ΥڡϤƤʥ֥åޡɲΥڡޤϤƤʥ֥åޡ Υڡlivedoor åפɲΥڡޤlivedoor å

ܼ

̵LANħ

  • ס
    • LANۤμͳ١ĥ⤤ͭLANξϥ֥Ĺѻ«뤬̵LANǤϤʤ
  • üβȥ桼ΰưؤб
    • ӥƥ⤤ӥ󥰤䥭åʤɤɤǤ̵LANȤϤϰϤʤ顢LAN³Ǥ
  • ͭLANΥե졼Ȱۤʤ롣
    • ̵LAN̿ΤȤǤꡢե졼̵LANMACե졼Ǥ롣
    • ͭLAN̿Τϥ֥Ǥꡢե졼EthernetMACե졼Ǥ롣
    • ̵LANAPϤλȤߤƤơե졼ߤѴ뵡ǽäƤ롣

̵LANμ

IEEE802.11b

  • ̵LANεʤȤƺǤڤƤ롣
  • ̿®٤11Mӥåȡ11MӥåȤȤΤϽִŪʺǹ®٤Ǥꡢºݤˤϥǡȥǡδ֤Ԥ֤Τǡ¸Ū®٤Ϻǹ5Mӥå٤Ǥ롣
  • 2.4GHzӤȤѤ롣ФISMХɤʤΤǡŻҥ󥸤ʤɤ⤳˴ޤޤ롣äơ̵LANζ᤯Żҥ󥸤ưȡδ֤̿®٤ꡢ̿ΤΤǤʤʤ뤳Ȥ롣
    • 2.4GHzӤ̿ʳΥƥBluetoothʤɤǤѤƤ롣η̡IEEE802.11bˤϡѴͥ줿ȿȻDSSSˤѤƤ롣
  • ѤŪϤƤ롣1999ǯIEEE802.11bбϻϤޤäƤơǤ˲ǯ⤿äƤ櫓ʤΤǡʤɥ饤ФΰϤǤ˴Ƥ롣äơȥ֥Ф֤ʤɤξ·äƤ롣
  • ߴ⤤Wi-Fi˥ѥʤǤС¿³뤳ȤǤ롣
  • ȤŪ褯֡IEEE802.11bбϡǤ̿ʤ2550m١Ǹ餷褱150mޤϤ
  • ۥåȥݥåȤǤĤ롣IEEE802.11bб̵LANɤäƤСۥåȥݥåȤμήIEEE802.11bʤΤǥΡPCƻѤǤ롣ڤƤȤ⤤
  • ˤDSSSѤƤ롣
  • Ʊ4ͥȤȤǤ롣114ͥ14Ĥޤ֤ͥǽʣƤʬΤǡƱ˻Ѥ뤳ȤǤΤ1/6/11/144ĤΥͥǤ롣

IEEE802.11a

  • ̿®٤Ϻ54Mӥåȡ®٤®Τϡּȿ⤤ۤ¿ξ򰷤ȤǤפȤ¤狼Ϥ
  • 5.2GHzӤȤѤ롣5.2GHzӤϳĤĤꡢ̵LANȤƻѤ䤹ʤߤˡܤǤ5.2GHzӤϵݥ졼ưƥʤɤ˳ƤƤơǤѤˤ¤뤬Ⳬ˿ʤߤĤĤ롣
  • IEEE802.11bľܤˤ³ǤʤߤˤϡAP̵LANץˡξбʤȤɬפ롣
  • ȤޤϤʤ5.2GHzӤϾ㳲ʪ˼夤ȤġȤäƤ⡢ǶIEEE802.11a̵LANåפɤʤǤꡢȤӶ褯ʤäƤƤ롣
  • Ʊ4ͥȤȤǤ롣34/38/42/464ĤΥͥ뤬롣μȿϽʣƤʤΤǡƱ4ĤΥͥȤȤǤ롣
  • ȿĤߤαƶ򾯤ʤ뤿ˡʣζӰʥ֥ꥢʬ䤷OFDMѤƤ롣

IEEE802.11g

  • ̿®٤Ϻ54Mӥåȡ»ѻ®٤ϡIEEE802.11a㴳٤ˤ롣
  • ˤOFDMѤƤ롣
  • IEEE802.11bθߴ롣
  • 郎Ū¤
  • ȤIEEE802.11bƱ͡äơȤŪ褯ϤĤ䤹
  • ͥ뤬ҤȤľʤƱ3ͥޤǤȤȤǤʤȤ߹碌1/6/11Ǥ롣
  • ޤѤʤΤǴ٤ˤ԰¤⤢롣
  • 2.4GHzӤνΥƥǤIEEE802.11IEEE802.11bȤθߴʤ顢˹®Ƥ롣
  • 5GHzӤIEEE802.11aȤξθߴߴˤޤ롣

IEEE802.11n

  • 100MbpsΥ롼ץåȤܻؤ
  • IEEE802.11a/gʤɤPHY쥤εꡢIEEE802.11eMAC쥤εȤ褦ˡPHY쥤MAC쥤̡˵ꤷƤTGnˤPHY/MACȤ߹碌ȡ륷ƥȤƤƤƤ롣

ޤȤ

̾ȿ®ͥ
IEEE802.11b2.4GHz11Mbps/22Mbps14
IEEE802.11a5.2GHz54Mbps4
IEEE802.11g2.4GHz54Mbps14

ɽΥܹͥξǤ롣

ʤˤäƤ13ͥޤǤʤΤ⤢롣ߡǤIEEE802.11a5.2GHzӡˤ̵LANεϲǤλѤؤƤ롣

̵LANѤ

  • ޥȡʽޥȤޤ
    • ߡ̵LANǺǤ褯ȤȿӤ2.4GHzISMХɡˤνޥӤ5GHzΥޥӤǤ롣ޥӤӥޥӤˤϡȤβ޸̤ˤäơݥȤüδ֤˼ʪ¸ߤƤʥɥ󥰤äƤˡѤμŲ٤䤹Ȥħ롣
  • ߥȡʽߥȤޤ
    • ޥӡޥӤǤϻѲǽʼȿӰ褬¤Τǡ˹®̲ˤϡ19GHzӤ˲äơ25GHzӡ27GHzӡ38GHzӡ60GHzӤʤɤνߥӡߥӤμȿѤ뤳Ȥͤ롣ȤϡޥӤȤ٤ƹȿӰݤǤȿ̡ľ»礭Ȥ꤬롣äơ¤줿ϤǤ٤ŵΥݤˤϡظƥʤѤɬפ롣Τ褦ľζȤΥޥѥˤϡ٤ޤȤޤäʬۤΤǡظƥʤȤȤˤäٱ䥹ץåɤ㸺Ǥ롣
  • ֳ
    • ֳѤ̵LANϡIEEE802.11PHYʤΤҤȤĤˤʤäֳ̿εʤƤΤIrDAInfrared Data AssociationֳǡˤǤꡢ1993ǯĹ850900nmֳˤ̵󥿥եΥǥեȥȤܻؤ󥽡ȤΩ줿
    • IrDAˤϡ1m̿Υǡ4Mbps®٤򥿡åȤˤơʥȤ㤤ȤåȤ롣ֳˤζħǤ붯ľ¨ʪˤ륷ɥ󥰤ȯꡢȼδĴɬפȤʤɤβ꤬롣

̵LANι۷

ե饹ȥ饯⡼

ե饹ȥ饯⡼ɡInfrastructure Modeϡ̵LANץ¢ޤPCɤˤ餺ˤ夷PCƱΤݥȤ𤷤̿ԤǤ롣Ʊ˥󥿡ͥåȤLAN³PC¿ȤǤ롣

롼ǽĥݥȵ̵LANȤƤѤǤ뤷ǤͭLANĶʤСݥȵLANݡȤˤ³뤳Ȥˤäơ¸LANĶĤޤޡ̵LANĶߤˤ뤳ȤǤޤ롣

ɥۥå⡼

ɥۥå⡼ɡAd-Hoc ModeϡݥȤ𤵤̵LAN ץ夷PCƱΤľ̿Ǥ롣ɥ쥹äˤȤСҵƱΤľ̿褦ʤΤǤ롣

ݥȤʤƤ褤ᡢ̵LANιѤޤȤ롣³PC̿Ψ礭㲼Τǡ٤PCǹ줿Ϥʥͥåȥιۤ䥤ե饹ȥ饯 ⡼ɤ˰ܹԤޤǤαŪʻѤ˸Ƥ롣

̵LANAP

APΥ

    • ¢Ƥ꥿פ̵LANAP̵LANƳͽǡLANΤιۤ򿷤ϥ롼AP㤦٤Ǥ롣
    • ߤμήⵡǽʥפ¿
    • ͭLANѤΥݡȤʣҤϡ̤˥ϥ֤Ѱդɬפ롣
    • ̤˥̵LANɤ¢Ƥꡢ줬ѤƤ롣̵LANˤ̤ߤ뤫ʪŪˤ̵LANɤȴФ褤Ȥ롣
  • ֥å
    • ǤͭLANʥ롼ʤɤ¸ߤˤߤƤ硢֥åAPȤȤ̵LANɲäǤ롣
    • OS˰¸ʤMac OSǤäƤĶǤäƤȤ櫓Ǥ롣ޤPCǤʤXbox̵LANɤ¢Ƥʤˤʤɤ̵LANб˻ѤǤ롣󥲡ൡͭLANбƤʤȻϤޤʤ
    • åʤСåȤΥͥåȥ˾˥֥åAPʪŪ³ǡLAN˼ͳ˥ǤʰΥХåɥˡ

㡧PLANEX̵LANСGW-EN11Xסڥ֥å

ʤħϼ̤Ǥ롣

  • LANݡȤĥ饤Ȥ̵LAN³뤿Ѵץ
  • ϡɥŪͭLAN̵LANѴ뤿ᡢOS˰¸ʤ
  • ץ󥿤䥲ൡäXboxPS2ˤ̵LANĶ˽°뤳ȤǤ롣
  • IEEE802.11/b˽
  • ̿®٤11Mbpz/5.5Mbps/2Mbps/1Mbpsб
  • ߥ󥰵ǽˤۤʤAP֤ưƤǧ뤳Ȥʤ³ǽ
  • ESSIDWEP64ӥå/128ӥåȡˤǽ
  • ̤ˤMDI/MDI-XڤؤåϡRJ45ݡȤΥ/ȥ졼Ȥڤؤ륹å
  • ̤ˤꥻåȥܥĹȡ꤬вٻ롣
  • ΢̥ƥåMode IDMACɥ쥹ˤ롣

ޤ֥饦ˤ̵LANСϼ̤Ǥ롣ʤ°ƤCD-ROM˴ޤޤƤ桼ƥƥWindowsѡˤȤäƤǤ롣

1̵LANСꤹ뤿νȤŬPCΥͥåȥ򤹤롣IPɥ쥹192.168.1.xx1199,201254Ǥդ͡ˡ֥ͥåȥޥ255.255.255.0Ȥ롣ʤʤС̵LANСIPɥ쥹192.168.1.200餫Ǥ롣ͻ̤ʤȤϥ֥å¿

2̤ˤMDI/MDI-XڤؤåXˤ碌롣ơȥ졼ȥפLAN̵֥LANСPCĤʤ롣֥κĹ100mǤ롣

3֥饦192.168.1.200˥롣BASICǧڤIDȥѥϤʤǧڤ̤롣

־ײ̤ɽ򼡤˼

  • ³SSID
    • ³Ƥ̵LANESSIDǤnon-specified SSID!פɽ̵LANΥ󥯤ǤƤ뤳Ȥ򼨤
  • ͥ
    • ߻ѤƤֹͥ档
  • BSSID
    • ³ƤBSSID44-44-44-44-44-44פɽƤ̵LANΥ󥯤ǤƤ뤳Ȥ򼨤
  • ̿®
    • ߤ®٤ɽ롣
  • ̿ʼ
    • ߤ̿ʼɽ롣
  • MACɥ쥹
    • ʤMACɥ쥹ɽ롣
  • IPɥ쥹
    • ꤵƤIPɥ쥹ɽ롣
  • ե०ver
    • ߤΥե०Сɽ롣
  • 磻쥹ver
    • ߤΥ磻쥹ե०Сɽ롣

ˤơäդ٤򼡤˵󤲤롣

  • [ȥ٥]ܥ򲡤ȡ³ǽ̵LANΰɽ롣
  • ե饹ȥ饯⡼ɤꤷϡ٤APο˱ơ֥ݥ̩١פꤹ뤳Ȥǡͥνʣ䴳Ĥ㸺Ǥ롣12ξϡס34ξϡס5ʾξϡֹפꤹ롣
  • ֥ɥǧڤפˤơWEPǧڥ르ꥺꤹ롣åܥå򥪥ˤȥɥWEPǧڤդˤȥץ󥷥ƥǧڤ롣
  • ¸̵LANIPɥ쥹Ӱˤ碌ơͥåȥԤ

̵LAN

̵LANɤΥ

  • PCɥ
  • PCI
  • USB

̵LANɤΥ⡼

ե饹ȥ饯⡼ɡʥޥ͡ɥ⡼ɡ

  • 饤ȤAP*1ľ³롣
  • Υ⡼ɤǤϥ饤ȤAP̿Ǥ롣

ɥۥå⡼

  • 饤ƱΤľ̿𤷤̿򤹤Ȥ˻Ȥ
  • Υ⡼ɤǤ̿Ԥ2ĤΥ饤ȤAP̿椹롣

ޥ⡼

  • ϥɤ̵LANɤΥ⡼ɤ򥵥ݡȤƤ롣
  • Υ⡼ɤǤϥ饤ȤAPΤ褦ôȤǤ롣

˥⡼ɡRFMON⡼ɡ

  • Υ⡼ɤǤϥǡϹԤ鷺Ӹ򤦥ѥåȤƻ뤹롣
  • Wireshark̵LANΥѥåȤ򥭥ץ㤹ϡץ㤹륳ԥ塼̵LANɤ˥⡼ɤ򥵥ݡȤƤɬפ롣
    • ߤWiresharkǤϡ̵LAN³̿ϥץǤ뤬̵LANͭΥѥåȡWEPΤʤɡˤϥץ㤹뤳ȤϤǤʤ
  • Linux̵LANɤ˥⡼ɤѹǤŪˡϡLinux˥ӥɥ󤵤Ƥ뵡ǽȤȤǤ롣
    • iwconfigޥɤȤС̵LANɤǤ롣

ȴĤ

  • ̵ͭȰۤʤܤ˸ʤȤħġ
  • ȤΥСϰϤȴĤιθɬפǤ롣
  • ȴĤˤƶˤꡢ¸®١ʥ롼ץåȡˤ㲼򾷤
  • ޤܤAPǥͥ뤬ŤʤȡƱ꤬ͤȯ롣
  • ̵LANƳˤϡեɤ㳲ʪʤɤˤĤƼºݤ˸ĴԤ̵LANAP֤ꤹ롣
    • ġȤơEkahau Site Surveyʤɤ롣

̵LANAPΥСϰ

ӥꥢ

  • ̵LANˤ̿ѲǽϰϤΤȡ

Сꥢ

  • 1Ĥ̵LANAPȡʥӡˤãϰϤΤȡ
  • ̿ʼˤĤƤϥӥꥢϰϤ롣
  • Ĥθɬפ륨ꥢǤ롣

Хåꥢ

  • ᥫХå
  • ӥꥢȥСꥢޤ᤿٤ƤΥꥢΤȡ

ХåۡԴӡ

  • ̵LANAPȤãǤ̵LAN̿ǤʤꥢΤȡ
  • ХåۡкȤƤϡȥ٥ȤȤĴԤХåۡȴĤȯʤ褦˥ϰϤͥĴɬפ롣
    • Ūˤ־Ĵ롣

ϥɥС

  • ¾̵LANAPN˥ϥɥСAPڤؤ˶Τȡ

ͥ߷

  • ʣ̵LAN̵֤LANѤǤ륨ꥢ礹Ȥϥͥ*2߷פդʤƤϤʤ
  • ̵LANǤϡ̵LANΥ饤Ȥ̵LANAPδ֤ǥǡ뤿ˤϡƱͥѤʤƤϤʤʤ
    • ơܤ̵LANAPƱΤƱͥȤȡȴĤζ줬롣
      • 򤹤뤿ˡܤ̵LANAPƱΤǤȴĤ򵯤ʤͥѤ褦˥ͥ߷פɬפǤ롣

̵LANΥͥ

̵LANͥȴĤ򵯤ʤͥ
IEEE802.11a36,40,44,48(W52)
52,56,60,64(W53)
100,104,108,112,116,120,124,128,132,136,140(W56)
19(ͥˤĤƤϺƱ
IEEE802.11b114ʳǤ13ޤ)4(1,6,11,14)
IEEE802.11g1133(1,6,11)

ʸ

  • ؼѥåȲϡ
  • إͥåȥĶֺ¡2ǡ


*1 WAP(Wireless Access Point)Τȡ
*2 ͥμȿӰ򣱤Ĥñ̤ȤΤǤ롣