̾??

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IEEE 802.11 ?ѥ??᡼?????????ˤϤ??Υץ??????????Ȥ??٤??ǤϤ????ޤ????? ??????????Ū (???ʤ??? SSID ?? WEP ??????????) ?Τ????ˤ??????? ifconfig(8) ?????Ѥ??Ƥ?????????

wicontrol ?桼?ƥ????ƥ??????Ѥ??ơ? ???????Υѥ??᡼???θ??ߤ??????򸫤뤳?ȡ? ?????ɤ????׾??󥫥??󥿤??ͤ??????פ??뤳?ȡ? (HostAP ?⡼?ɤǤ?) ??Ϣ?դ????줿???ơ????????????󤹤뤳?ȡ? ???Ѳ?ǽ?ʥ????????ݥ????Ȥ򥹥????󤹤뤳?Ȥ?????ǽ?Ǥ???

wicontrol ??Ϳ???????? iface ?????ϡ? Lucent, Intersil, Atheros ?ǥХ????˴?Ϣ?դ??????????????󥿥ե?????̾?Ǥ??뤳?Ȥ?ɬ?פǤ? (wi0, wi1, ath0 ??)?? ???ꤷ?ʤ??????ˤ? “wi0” ?????ꤵ???ޤ???

???ץ?????

[-i] iface [-o]

???ꤷ???磻???쥹???󥿥ե??????θ??ߤ???????ɽ?????ޤ??? ???ߤΥ????ɤ????????ɥ饤?Ф????????Ф???ɽ?????ޤ??? ?ɲä? -o ?ե饰?????Ѥ????ȡ? wicontrol ?ϡ??????ɤ????????????????׾??󥫥??󥿤?ɽ?????ޤ??? ?Ź沽?????ϡ? wicontrol ?? root ?Ǽ¹Ԥ??줿?????Τ?ɽ???????ޤ???

[-i] iface -a access_point_density

???ꤷ?????󥿥ե??????? ?????????ݥ?????̩?? ?????ꤷ?ޤ??? ???????ͤϡ? 1 (??)?? 2 (??)?? 3 (??) ?Ǥ??? ?????????ϡ????ȥ??ǥ??????ͤ??????˱ƶ????ޤ???

[-i] iface -m mac_address

???ꤷ?????󥿥ե??????Υ??ơ??????󥢥ɥ쥹?????ꤷ?ޤ??? mac_address ?ϡ????????Ƕ??ڤ????? 6 ?Ĥ? 16 ?ʿ???Ϣ³?Ȥ??ƻ??ꤵ???ޤ??? ?㤨?? “00:60:1d:12:34:56” ?Ȥʤ??ޤ??? ?????ˤ??ꡢ???????ɥ쥹???????ɾ??˥ץ??????व?졢 ???󥿥ե??????⹹???????ޤ???

[-i] iface -d max_data_length

???ꤷ?????󥿥ե??????Ρ????????ե졼?ॵ?????κ????????ꤷ?ޤ??? max_data_length ?ϡ?350 ???? 2304 ?ޤǤ?Ǥ?դο??ͤǤ????ǥե????Ȥ? 2304 ?Ǥ???

[-i] iface -r RTS_threshold

???ꤷ?????󥿥ե??????? RTS/CTS ???ͤ????ꤷ?ޤ??? ?????ϡ?RTS/CTS ?ϥ??ɥ????????????˻??Ѥ????Х??ȿ??????椷?ޤ??? RTS_threshold ?? 0 ???? 2347 ?ޤǤ?Ǥ?դο??ͤǤ????ǥե????Ȥ? 2347 ?Ǥ???

[-i] iface -Z

wi(4) ?ɥ饤???????Ǵ????????뿮?涯?٥????å????򥯥ꥢ???ޤ???

[-i] iface -C

wi(4) ?ɥ饤???????Ǵ????????륭???å??夵?줿???涯?پ?????ɽ?????ޤ??? ?ɥ饤?Фϡ?¾?Υۥ??Ȥ????????????ѥ??åȤ˴ؤ??? ???涯?٤ȥΥ??????٥??˴ؤ??????????ݻ????ޤ??? ???涯?٤ȥΥ??????٥????ͤ? dBms ??ñ?̤?ɽ???????ޤ??? ?????ʼ??ͤϡ????涯?٤????Υ??????٥??򸺤??????ΤǤ? (???ʤ????????Υ??????ɤ??????ξ??硢?????ʼ??????夷?ޤ?)??

???ͤ??㲼???????ץ????????Ѥ줿???ץ?????

[-i] iface -t tx_rate

???Υե饰?ϲ??ͤ??㲼???????ΤǤ??? ifconfig(8) ?? mediaopt ?????????˻??Ѥ??Ƥ?????????

???ꤷ?????󥿥ե???????ž???졼?Ȥ????ꤷ?ޤ??? ž???졼?ȤȤ??Ƥ????????ͤϡ? ???󥿥ե???????ɸ???? WaveLAN/IEEE ?Ǥ??뤫 WaveLAN/IEEE Turbo ?????ץ? ???ˤ??ä??Ѥ????ޤ??? ɸ???? NIC ?ǥ??ݡ??Ȥ???????ž???졼?Ȥ? 2Mbps ?Ǥ????? ???????Ǥ? NIC ?ǤϺ???®?? 6Mbps ?򥵥ݡ??Ȥ??ޤ??? ????ɽ?ϡ???????ž???졼?Ȥ????????б?????ž??®?٤򼨤??ޤ?:

TX ?졼??	NIC ®??
1	??????® (1Mbps)
2	????ɸ??® (2Mbps)
3	??ư?졼?????? (??®)
4	??????® (4Mbps)
5	??????® (6Mbps)
6	??ư?졼?????? (ɸ??)
7	??ư?졼?????? (??®)

?ǥե????ȤΥɥ饤?Ф??????? 3 (??ư?졼??????) ?Ǥ??? ???ͤϥ????ɤ??Ȥ˰㤤?ޤ???

[-i] iface -n network_name

???Υե饰?ϲ??ͤ??㲼???????ΤǤ??? ifconfig(8) ?? ssid ?? nwid ???????˻??Ѥ??Ƥ?????????

???Υ??ơ??????󤬲?????˾???Ǥ??륵???ӥ????å? (IBSS) ??̾???????ꤷ?ޤ??? network_name ?ϡ?30 ʸ???ޤǤ?Ĺ????Ǥ?դΥƥ?????ʸ?????Ǥ??? ?ǥե????Ȥ?̾????ʸ???? “ANY” ?Ǥ??ꡢ ?ǽ??????Ѳ?ǽ?Ȥʤä??????????ݥ????Ȥ˥??ơ???????????³???뤳?Ȥ? ?????ޤ??? ???Υ??ץ????????꤬ư??뤿???ˤϡ? -p ?ե饰?????Ѥ??ơ????󥿥ե??????? BSS ?⡼?ɤˤ??뤳?Ȥ?ɬ?פǤ???

??: WaveLAN ?Υޥ˥奢???ˤ????ȡ? ??ʸ?????????ꤹ???? ?ۥ??Ȥ????٤ƤΥ????????ݥ????Ȥ???³??ǽ?Ȥʤ??Ȥ????ޤ??? ???????̤Υɥ饤?Ф򸫤??Ȥ?????ʸ???? “ANY” ??Ʊ?ͤ?ư????Ȥ????ޤ?????

[-i] iface -s station_name

???Υե饰?ϲ??ͤ??㲼???????ΤǤ??? ifconfig(8) ?? stationname ?? station ???????˻??Ѥ??Ƥ?????????

???ꤷ?????󥿥ե??????? ???ơ???????̾ ?????ꤷ?ޤ??? station_name ?Ͽ??ǤΤ????˻??Ѥ????ޤ??? Lucent WaveMANAGER ???եȥ??????ϡ????⡼?ȥۥ??Ȥ?̾????Ĵ????ǽ?Ǥ???

[-i] iface -c 0 | 1

???Υե饰?ϲ??ͤ??㲼???????ΤǤ??? IBSS ?⡼?ɤ? IBSS ?ͥåȥ???򥵥ݡ??Ȥ????ե????०?????????ĥ????ɤǤϡ? IBSS ?ͥåȥ???ϼ?ưŪ?˺????????ޤ???

???ơ??????󤬥????ӥ????å? (IBSS) ?????????뤳?Ȥ??????ޤ??? ?????????ͤϡ? 0 (IBSS ?????????ޤ???) ?? 1 (IBSS ?κ?????ͭ???ˤ??ޤ?) ?Ǥ??? ?ǥե????Ȥ? 0 ?Ǥ???

??: ???Υ??ץ??????ϼ¸?Ū????Ū?ǤΤ??󶡤????Ƥ??ޤ?: ?????? Lucent ?ե????०?????Τߤ??????򥵥ݡ??Ȥ??ޤ???

[-i] iface -q SSID

???Υե饰?ϲ??ͤ??㲼???????ΤǤ??? ???Υѥ??᡼???????ꤹ?뤿???θ??߹??ޤ?????ˡ?ϡ? ifconfig(8) ???? ssid ???????Ǥ???

???ꤷ?????󥿥ե????????˺??????? IBSS ??̾?? (SSID) ?????ꤷ?ޤ??? SSID ?ϡ?30 ʸ???ޤǤ?Ĺ????Ǥ?դΥƥ?????ʸ?????Ǥ???

??: ???Υ??ץ??????ϼ¸?Ū????Ū?ǤΤ??󶡤????Ƥ??ޤ?: ?ۥ??ȥ????ƥ????? IBSS ?κ?????ͭ???ˤ??Ƥ⡢ ?ºݤˤ?ư??Ƥ??ʤ??褦?Ǥ???

[-i] iface -p port_type

???Υե饰?ϲ??ͤ??㲼???????ΤǤ??? ???Υե饰?ϻȤ????뤳?ȤϤʤ??ä??Ǥ??礦?? ???Υե饰???Ȥ??ʤ??Ǥ????????? ???ΰ?̣?ϻ??Ѥ??륫???ɤΥ????פ˰?¸???? ?????ˤ??äƤϥ????ɤ˥??󥹥ȡ??뤷???ե????०?????˰?¸???ޤ??? ???ա? ?????? ???Ѷػߡ? ?????? ifconfig(8) ?? media ?? mediaopt ?Υ??ޥ??ɤ????Ѥ??Ƥ?????????

???ꤷ?????󥿥ե??????? ?ݡ??ȥ????? ?????ꤷ?ޤ??? port type ?????????ͤϡ? 1 (BSS ?⡼??) ?? 3 (???ɥۥå?) ?⡼?ɤǤ??? ???ɥۥå??⡼?ɤǤϡ? ???륹?ơ?????????ľ?????Ȥ??Ϥ??ϰϤ?¾?Υ??ơ??????? (???????⥢?ɥۥå??⡼?ɤ?ư??Ƥ??뤳?Ȥ?ɬ?פǤ?) ??ľ???̿???ǽ?Ǥ??? BSS ?⡼?ɤǤϡ? ?????????ݥ????Ȥ????椹?륵???ӥ????åȤȥۥ??ȤȤ???Ϣ?դ??????뤳?Ȥ? ɬ?פǤ??? ?????????ݥ????Ȥϡ??????ɥ??ơ????????֤Υȥ??ե??å??????Ѥ??ޤ??? ?ǥե????Ȥ??????? 1 (BSS ?⡼??) ?Ǥ??? Lucent ?????ɤǤΰ?̣?礤?ȡ? Prism ?????ɤǤΰ?̣?礤?ȡ? Symbol ?????ɤǤΰ?̣?礤?Ϥ??٤ư㤤?ޤ??? ???Υե饰?????Ѥ??ʤ??Ǥ?????????

[-i] iface -e 0 | 1

???Υե饰?ϲ??ͤ??㲼???????ΤǤ??? ifconfig(8) ?? wepmode ???ץ????????֤??????????ޤ?????

WEP ?Ź沽??ͭ?????ޤ???̵???????ޤ??? ???Ѳ?ǽ???ͤ? 0 (?Ź沽̵??) ?ޤ??? 1 (?Ź沽ͭ??) ?Ǥ??? ?Ź沽?ϥǥե????ȤǤ?̵???Ǥ???

128 ?ӥåȤ????? 64 ?ӥåȤ? WEP ?Ȥ????ˤ????Ƥ??ޤ??? ?ܺ٤? ?Х? ?????򸫤Ƥ?????????

[-i] iface -k key [-v 1 | 2 | 3 | 4]

???Υե饰?ϲ??ͤ??㲼???????ΤǤ??? ifconfig(8) ?? wepkey ???????˻??Ѥ??٤??Ǥ???

WEP ?Ź沽?????????ꤷ?ޤ??? ?ץ?????????ǽ?ʰŹ沽?????ϡ??ǥե????Ȥ? 4 ?Ĥ????ޤ??? ?ġ??Υ????? -v ?ե饰????????ǽ?Ǥ??? -v ?ե饰?????ꤵ???ʤ??ȡ??ǽ??Υ????????ꤵ???ޤ??? ?Ź沽?????ϡ??̾??ƥ????? (???ʤ??? “hello”) ?ޤ??ϰ?Ϣ?? 16 ?ʿ? (???ʤ??? “0x1234512345”) ?Τɤ??餫?Ǥ??? WaveLAN Turbo Silver ?????ɤǤϡ??????? 40 ?ӥåȤ????¤????Ƥ??ޤ??Τǡ? ?????? 5 ʸ???ޤǤΥƥ?????ʸ?????? 10 ???? 16 ?ʿ??Ǥ??? WaveLAN Turbo Gold ?????ɤǤϡ??????? 104 ?ӥåȤޤǤǤ??Τǡ? Silver ?????ɤǥ??ݡ??Ȥ????Ƥ????񼰤˲ä??? ?????? 13 ʸ???ޤǤΥƥ?????ʸ?????? 26 ???? 16 ?ʿ??????ݡ??Ȥ????ޤ???

?????¤β??????Τ????ˤϡ?16 ?ʿ??????θ????侩???ޤ??? ?ƥ????ȸ????? WEP ?Ź??ؤΥޥåԥ󥰤ϡ??̾?ɥ饤?и?ͭ?Ǥ??? ?äˡ? Windows ?ɥ饤?ФΥޥåԥ?????ˡ?? FreeBSD ?Τ??ΤȤϰۤʤ??ޤ???

??: 128 ?ӥåȤ????? 64 ?ӥåȤ? WEP ?Ź??Ȥ????ˤ????Ƥ??ޤ??? ?ܺ٤? ?Х? ?????򸫤Ƥ?????????

[-i] iface -T 1 | 2 | 3 | 4

???Υե饰?ϲ??ͤ??㲼???????ΤǤ??? ifconfig(8) ?? weptxkey ???????˻??Ѥ??٤??Ǥ???

4 ?Ĥ? WEP ?Ź沽?????Τɤ??????Ѥ???ž???ѥ??åȤ??Ź沽???뤫?????ꤷ?ޤ???

??: 128 ?ӥåȤ????? 64 ?ӥåȤ? WEP ?Ȥ????ˤ????Ƥ??ޤ??? ?ܺ٤? ?Х? ?????򸫤Ƥ?????????

[-i] iface -f frequency

???Υե饰?ϲ??ͤ??㲼???????ΤǤ??? ifconfig(8) ?? channel ???????˻??Ѥ??Ƥ?????????

???ꤷ?????󥿥ե??????????Ȥμ??ȿ??????ꤷ?ޤ??? frequency ?ϼ???ɽ?˼????????ͥ? ID ?ǻ??ꤹ?뤳?Ȥ?ɬ?פǤ??? ???Ѳ?ǽ?ʼ??ȿ??ϡ????Ϥ????ɤˤ??äƻ??ꤵ???????ȵ????˰?¸???ޤ??? ???Τε??????Ȥ??Ƥϡ? FCC (?ƹ?)??ETSI (????)???ե??󥹡????ܤ??????ޤ??? ɽ???μ??ȿ??? MHz ?Ǥ???

?????ͥ? ID	FCC	ETSI	ʩ	??
1	2412	2412	-	2412
2	2417	2417	-	2417
3	2422	2422	-	2422
4	2427	2427	-	2427
5	2432	2432	-	2432
6	2437	2437	-	2437
7	2442	2442	-	2442
8	2447	2447	-	2447
9	2452	2452	-	2452
10	2457	2457	2457	2457
11	2462	2462	2462	2462
12	-	2467	2467	2467
13	-	2472	2472	2472
14	-	-	-	2484

?????ʥ????ͥ??????ꤹ???ȡ?NIC ?ϥǥե????ȥ????ͥ????????ޤ??? ?ƹ񤪤??Ӳ????????䤵???Ƥ??? NIC ?Ǥϡ??ǥե????ȥ????ͥ??? 3 ?Ǥ??? ?ե??󥹤????䤵???Ƥ??? NIC ?Ǥϡ??ǥե????ȥ????ͥ??? 11 ?Ǥ??? ???ܤ????䤵???Ƥ??? NIC ?Ǥϡ??ǥե????ȥ????ͥ??? 14 ?Ǥ??? ?????ϡ?11Mbps ?????? NIC ?ˤ????Ƥ?ͣ?????Ѳ?ǽ?ʥ????ͥ??Ǥ??? 2 ?ĤΥ??ơ??????????̿????뤿???ˤϡ? Ʊ???Υ????ͥ??????ꤵ???Ƥ??뤳?Ȥ?ɬ?פǤ??뤳?Ȥ????դ??Ƥ?????????

[-i] iface -P 0 | 1

???Υե饰?ϲ??ͤ??㲼???????ΤǤ??? ifconfig(8) ?? powersave ???????˻??Ѥ??٤??Ǥ???

???ꤷ?????󥿥ե????????Ÿ???????ͭ???ޤ???̵???ˤ??ޤ??? ?Ÿ???????ͭ???ˤ????ȡ? ???ߤ˥??꡼??/?????????ץ??ȥ????????Ѥ??뤳?Ȥˤ??ꡢ ???Х??륹?ơ????????ξ????Ϥ??????ޤ??? ???Τ????˼????ٱ䤬?????֤????ä??ޤ??? ?ǥե????ȤǤϡ??Ÿ??????ϥ??դǤ??? ?Ÿ?????????ǽ???뤿???ˤϡ? ?????????ݥ????ȤȤζ?Ĵ??ɬ?פʤ??Ȥ????դ??Ƥ????????? ???ɥۥå??⡼?ɤǤ?ư??ޤ????? ?ޤ??Ÿ??????????ݡ??Ȥ????Ƥ????Τϡ? Lucent WavePOINT ?ΥС??????? 2.03 ?ʹߤΥե????०?????? WaveLAN PCMCIA ?????ץ??ΥС??????? 2.00 ?ʹߤΥե????०?????ΤߤǤ??? ?Ť????ӥ??????Ǥϡ??Ÿ??????????????ۤä?̵?뤵???ޤ??? ???Υѥ??᡼???ˤȤä????????ͤϡ? 0 (????) ?? 1 (????) ?Ǥ???

[-i] iface -S max_sleep_interval

???Υե饰?ϲ??ͤ??㲼???????ΤǤ??? ifconfig(8) ?? powersleep ???????˻??Ѥ??٤??Ǥ???

?Ÿ???????ͭ???ʤȤ??˻??Ѥ??륹?꡼?״ֳ֤????ꤷ?ޤ??? max sleep interval ?ϥߥ??äǻ??ꤷ?ޤ????ǥե????Ȥ? 100 ?Ǥ???

??Ϣ????

?Х?

WEP ?Ź?ˡ???ˤ????Ƥ??ޤ??? ???????Υ??????? ¿???οͤ??ä??褦?ʵ?Υ?ˤ????褦???軰?Ԥ??????Ǥ??Ƥ??ޤ??ޤ??? ?Ǥ?????Ū??????Ū?ʥ????????ƥ??ʳ??Τ??Ȥˤ? WEP ?????Ѥ??ʤ??Ǥ????????? IPSEC ?????????٤ʥ????????ƥ????󶡤??ޤ??Τǡ? ??ǽ?ʸ¤ꤽ?????????Ѥ??Ƥ????????? ?????????ݥ????Ȥ䥢???????ݥ????Ȥ??̤??ƷҤ????磻???쥹?ޥ????? ???Ѥ??ʤ??Ǥ????????? ?ʤ??ʤ顢?????????̤????ȥ??ե??å????????Ǥ??뤳?Ȥ????ݾڤǤ??ʤ??????Ǥ??? MAC ???ɥ쥹?ϴ?ñ?˵?¤?Ǥ??ޤ??Τǡ? ͣ???Υ??????????¤ˤϻ??Ѥ??ʤ??Ǥ?????????

WEP ?ؤι????ϼ?ưŪ?ʹ????Ǥ??ꡢ ?????ˤϥͥåȥ?????Υѥ??åȤ????????Ǥ??뤳?Ȥ?????ɬ?פǤ??? ??ưŪ?ʹ????ϻפä????????󤯤????Ǥ???ǽ?Ǥ??ꡢ ?ݥ????ȥġ??ݥ????ȥ??ץꥱ?????????ǻ??Ѥ??????ü쥢???ƥʤ????Ѥ????С? ???ޥ????????????Ǥ???ǽ?Ǥ??? 5,000,000 ???? 6,000,000 ?Υѥ??åȤ????ǡ? ?????Ԥ? 128 ?ӥå? WEP ?ͥåȥ???Υ??????????Ǥ??Ƥ??ޤ??ޤ??? ????????????¿???Υѥ??åȤΤ褦??ʹ?????ޤ??????и?Ū?ˤϡ? ??ʬŪ?????٤??????ä??ͥåȥ???ˤ????ơ? ?????̤Υȥ??ե??å????????֤??????????Ƥ??ޤ??ޤ??? ???륭????»?ʤ????Ƥ??ޤä??ʤ??С? ͣ???μ??ż??ʤϤ??Υ????λ??Ѥ??ߤᡢ???????????????Ѥ??뤳?Ȥ????Ǥ???

???ι????ξܺ٤? http://www.cs.rice.edu/~astubble/wep/wep_attack.html ?򸫤Ƥ????????? WEP ???ˤ???????????¿???Υץ??????ब?????в??äƤ??ޤ???

WEP ???Ȥ虜???????ʤ????硢 ?????????Υ????Х??Ȥ??Ȥ??٤??Ǥ??ꡢ ASCII ʸ???˸??ꤹ?٤??ǤϤ????ޤ????? ??Ǥ???ι????? WEP ?????Ф??Ʋ?ǽ?Ǥ??? ASCII ???? 1 ?????????ˤ뤳?Ȥ???ǽ?Ǥ??뤳?Ȥ??¾ڤ????Ƥ??ޤ??? ?????????Х??ȤǤ?????2 ???ְ??????ˤ????Ƥ??ޤ??ޤ???

???ߤΤȤ??????業???å????ϲ????Ƥ??ޤ???

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